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Re: [Maria-discuss] New Question: backup
by Reindl Harald 10 Jul '15

10 Jul '15

Am 10.07.2015 um 14:03 schrieb Pantelis Theodosiou: > Is rsync a valid backup option for a running server? no > Without stopping it or at least (flushing and) locking tables first? no there are files in use and you can't get a safe, consistent snapshot of the datadir when the server is running, what you can do is one hot rsync, then stop mysqld and make a second rsync which should be fast because it only needs to copy the recent changes and fire up the daemon after that but that's just a workaround losing caches and buffers for nothing there is no problem start a replication-slave instance even on the same host while it's prferred to have it on a different because that brings you a "realtime backup" if the master host crashs unclean and refuses to start mysqld because damage of datafiles > On Wed, Jul 8, 2015 at 3:53 PM, Reindl Harald <h.reindl(a)thelounge.net > <mailto:h.reindl@thelounge.net>> wrote: > > > > Am 08.07.2015 um 16:40 schrieb AskMonty KB: > > A new question has been asked in "MariaDB Documentation" by > gtrymore. Please answer it at http://mariadb.com/kb/en/backup/ > as the person asking the question may not be subscribed to the > mailing list. > > -------------------------------- > How do you back up a mariadb server and what is /var/lib/mysql > directory > -------------------------------- > > power down the replication slave and rsync /var/lib/mysql to the > backup-location or whatever folder is configured as datadir - to be > honest you could have typed the same in a google search

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[Maria-discuss] New Question: backup
by AskMonty KB 10 Jul '15

10 Jul '15

Hello, A new question has been asked in "MariaDB Documentation" by gtrymore. Please answer it at http://mariadb.com/kb/en/backup/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- How do you back up a mariadb server and what is /var/lib/mysql directory -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/backup/

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[Maria-discuss] New Question: MaxScale without a Single Point of Failure?
by AskMonty KB 10 Jul '15

10 Jul '15

Hello, A new question has been asked in "MaxScale Getting Started" by iomdesign. Please answer it at http://mariadb.com/kb/en/maxscale-without-a-single-point-of-failure/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hi, We are looking at potentially using MaxScale as a solution to load balance our MySQL connections and provide read/write splits in a master slave setup. If we have both web servers pointing to a single proxy then obviously we have a single point of failure. When we were originally looking at HAProxy it was suggested having a local proxy for each web server that could then balance out across the databases. Is it possible to run MaxScale in a similar fashion? Is there a better approach that could be suggested with MaxScale without a single point of failure? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/maxscale-without-a-single-point-of-failure/

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[Maria-discuss] mariadb galera on sles?
by Federico Razzoli 07 Jul '15

07 Jul '15

Hi Is there a MariaDB Galera cluster repository for SLES12? I've found MySQL Galera repos, but not MariaDB... Regards Federico

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[Maria-discuss] New Question: Limits in .frm
by AskMonty KB 01 Jul '15

01 Jul '15

Hello, A new question has been asked in "Optimization and Tuning" by lrirwin. Please answer it at http://mariadb.com/kb/en/limits-in-frm/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Does MariaDB implement anything to either split the content of the .frm files (or some other approach) to get beyond the 64K limit? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/limits-in-frm/

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 01 Jul '15

01 Jul '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi I'll try hard to fix the problem with rsync, even if I switch to mysqldump or xtrabackup-v2 in the future. Some context : mariadb and galera are built in buildroot and run on raspberry pis (ARMv6). Mariadb is started manually. I fixed the config file as you suggested yesterday (wsrep_cluster_address=gcomm://IP1,IP2,IP3 in my.cnf on all three nodes). I bootstrap the cluster on node #1 with --wsrep-new-cluster and I just start mysqld_safe and nodes #2 and #3. Running: mysql -u root --execute="SHOW GLOBAL STATUS WHERE Variable_name IN ('wsrep_ready', 'wsrep_cluster_size', 'wsrep_cluster_status', 'wsrep_connected');" on node #1 gives me: +----------------------+---------+ | Variable_name | Value | +----------------------+---------+ | wsrep_cluster_size | 3 | | wsrep_cluster_status | Primary | | wsrep_connected | ON | | wsrep_ready | ON | +----------------------+---------+ and on nodes #2 and #3: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111 "Connection refused") If I start mariadb outside a cluster on nodes #2 and #3 it works as expected. It seems nodes #2 and #3 are never synced since SYNCED never appears in error log. wsrep_sst_method is rsync. On 24/06/2015 15:00, Guillaume Lefranc wrote: >> Does this mean that mariadb tries to sync nodes but for some >> reason the script hangs, the nodes are never sync and remain >> unusable? > > I'm afraid that must be something along those lines. I have the > following suspicions: > > * SELinux or Apparmor not disabled, causing the SST to hang > forever. * Ports not open on the firewall (for the record you need > 3306, but also 4444, 4567 and 4568). Neither SELinux or Apparmor is enabled and there is no firewall on any of the boxes. They are all connected to the same ethernet switch. I'm investigating wsrep_sst_rsync script. Here are the processes running: # ps auxf | grep mysql 128 root {mysqld_safe} /bin/sh /usr/bin/mysqld_safe - --defaults-file=/etc/mysql/my.cnf 422 mysql /usr/bin/mysqld --defaults-file=/etc/mysql/my.cnf - --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/plugin - --user=mysql --wsrep_provider=/usr/lib/libgalera_smm.so - --log-error=/var/lib/mysql/buildroot.err --pid-file=/tmp/mysql.pid - --socket=/tmp/mysql.sock --port=3306 - --wsrep_start_position=00000000-0000-0000-0000-000000000000:-1 429 mysql sh -c wsrep_sst_rsync --role 'joiner' --address '192.168.1.80' --auth '' --datadir '/var/lib/mysql/' --defaults-file '/etc/mysql/my.cnf' --parent '422' --binlog '/var/lib/mysql/mariadb-bin' 430 mysql {wsrep_sst_rsync} /bin/bash -ue /usr//bin/wsrep_sst_rsync --role joiner --address 192.168.1.80 --auth --datadir /var/lib/mysql/ --defaults-file /etc/mysql/my.cnf --parent 422 --binlog /var/lib/mysql/mariadb-bin 458 mysql rsync --daemon --no-detach --port 4444 --config /var/lib/mysql//rsync_sst.conf 26966 mysql sleep 0.2 Note the sleep 0.2: it shows up often. It appears in wsrep_sst_rsync in two places: lines 136--140: # wait for tables flushed and state ID written to the file while [ ! -r "$FLUSHED" ] && ! grep -q ':' "$FLUSHED" > /dev/null 2>&1 do sleep 0.2 done lines 281--284: until check_pid_and_port $RSYNC_PID $RSYNC_REAL_PID $RSYNC_PORT do sleep 0.2 done Is it possible that one these loops never terminates? If I run the same commands invoked by mysql manually, they terminate with errors because SST_PROGRESS_FILE and WSREP_SST_OPT_ROLE aren't defined but this is probably not significant. I'll be happy to read any idea you might have. Maybe I should also send this message to galera mailing list? Cheers, - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVi9d9AAoJEEkkwl4JtJ9yE6EP/3PVzEXO7KVX9UrKrQSLXXM/ EWuV2a2KKxB8GkH1uDBISrn84futPR6M7/gdbMV8DeRNWAbCWgXWkrY/HVALvLxu jze4znZMmn+mxqDzmhp1klon+w9WAyH7lSfIC4AGgSiAe6ZFP5c8CSfbLNJPlSM+ buoJTQz9BFo+NTh4w7gbZUjAJVEm/7CpM8TwMPsu7+mMvbn4yMMLU2RkjhysGGKI YAJ9dXYjmD+49Z3Z2B54lRGeIbZNMDRjlQ/+F61Ml9XbQYJtDb8gHGN5a4FIiaFh pvOtjCi5foXdGfGv/nPbSkrMqkKBJHL0xbnKeze/OdIdZ1aOVN7Sy5tZJirlCJV3 q/48hmrIIMVU1FuC9F0zW7lGHsgsKiQvLM0X8C/ZdX0ZTvTjWWefoWLa/fSv/vYp z9E5HJxJ47gbnGeSEBby1+TmV/GoXvjiyH3oRXzEuyEP5xQtKH4Kvrh9MhwZdZpv sJc5QO9qfAHPecavhRQ1luuv6JCSqLPGpF+3RB80rB+BRUkwi0dfO0RmBzzmKBGZ vryGxAVBNZmpIatuCWY4cvvrkQm9kF7JMAR1rNTRylxLtyI5TR42c5r24tSasWct P6gICSrMBKVgoCdxanTI2q+faqAur/NDq4W6tgeqRnV/mk9zQW4oxJxfwQlS0zr6 YiUMXGeRi6IT0MTKwChk =goS7 -----END PGP SIGNATURE-----

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[Maria-discuss] New Question: Data Type
by AskMonty KB 29 Jun '15

29 Jun '15

Hello, A new question has been asked in "MariaDB Community" by bhumika. Please answer it at http://mariadb.com/kb/en/data-type/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hello, Can I create my own custom Data type in Maria DB , Can you please provide me some help on this. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/data-type/

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[Maria-discuss] New Question: ipv6
by AskMonty KB 28 Jun '15

28 Jun '15

Hello, A new question has been asked in "MariaDB FAQ" by gerald_schade_g. Please answer it at http://mariadb.com/kb/en/ipv6/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- does, will or when (and how) will MariaDB support client-connections via ipv6? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/ipv6/

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[Maria-discuss] doubt about index
by Roberto Spadim 26 Jun '15

26 Jun '15

hi guys, i`m with a doubt... when i have a primary key i know that's a unique key when i have a index with primary key + any other column, does mariadb consider that it's unique too? i`m thinking more about SELECT optimization

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[Maria-discuss] FedereratedX ODBC Source
by Darin Keever 25 Jun '15

25 Jun '15

This is regarding: https://mariadb.com/kb/en/mariadb/about-federatedx/ Specifically, the last section bullet - Support for other RDBMS vendors using ODBC My employer started a project to add a generic ODBC source to the FederatedX plugin. Once into the project, it was decided that creating a specific source to our COM server would be faster. The ODBC source did work, but it was buttoned up after read-access was completed. I'm not sure if it will ever be released, but I thought we should distribute the code regardless. Please find an incredibly boring page here: http://stonebond.com/mariadb-contributions/ Included in the zip are the changes to source files, as well as two additional files for connecting to ODBC and to our COM dll. These were only compiled on windows, so likely are not ready for inclusion in the source tree. Let me know if you have any questions.

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[Maria-discuss] More love for Dynamic Columns - support in Sequel Pro
by Tom Worster 24 Jun '15

24 Jun '15

Just a little bundle plugin to view the values in a dyncol blob but very handy all the same. If you use dyncols, which I do. https://github.com/tom--/sequel-pro-maria-dynamic-column In other dyncol news, we've improved the ORM extension <https://github.com/tom--/dynamic-ar> that I mentioned in a previous email. I'm using it in a project and it's really nice not to have to either mess with the schema every day or EAV. Having a nosql document in every row of a table is real swell. Tom

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Guillaume, Nirbhay, On 24/06/2015 15:35, Guillaume Lefranc wrote: > If you want to try xtrabackup SST: * xtrabackup must be installed > on all servers * you need to set wsrep_sst_method=xtrabackup-v2 > (the older method is full of horrible bugs) * you need to set > wsrep_sst_auth to a user account which has permissions to do > backup, e.g. : RELOAD, LOCK TABLES, REPLICATION CLIENT at the > minimum > > I cannot stress it enough but re-read the docs thoroughly before > doing anything :-) > In my case it means creating a buildroot package for xtrabackup, which is definitely on my TODO list, but wasn't scheduled just now :) Since SST fails both with rsync and mysqldump (even when I set credentials properly, or think I do), I think I should fix that before trying to switch to another method. I think this mariadb problem is hiding a more fundamental communication problem between my buildroot boxes. I'll let you know. - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVisWEAAoJEEkkwl4JtJ9yPmsQALxq44ZbyqqHhnUStSo5P29H RVvUztKZ9cfG11ksPToFeCIlcuMiVhL6j5nzLQ/nskEIavVPeSCovmUVlYNTqLAm ZufNhGY0xAvUoaaDow125dy7wB0Sxq246cAFytNMP1ru/T770h955uObSCpEu7ql PW18Qd2DMoNDb1xReyAmGiUa2wHdWJMLHP7G5tn4nIauESgymRRMh5Ha/7BpBIWw WoEFr3BPPXvzdm/SHY/rjWRR5pl5xKlKv3gzweuNWw64d5T2ppO906bId3b8fZWz iSEwhmX57Pgkgpn2iPjx3eCQVkRI5Du7rMifhbA0Os5tsHXB+Ia3seVeXs+DMkvL tQTnQIMgzRC7M6zCBOt7axZwQVH0DDuZwBfPDzPbF2EiiSTkwULPZN90Mp/itOR3 84xkC7b2hZG6porEJv2/gNk/SBop8Elvx91JcSv7t7RNDMGggq4q3ZXz6ai4vGMY nIWH/hNqiybeUFrVBRWoVpiRSejLLB+SVf1v74yiB7JeXbuIa8WnbgVek0cle3j5 u4wBk+MkewrcVhDxXB6d1x9k/e0QP1MaohUPMFeyrw25MtoyFx/RfjhI8cMtPSdI 9lF39YqNMDrZ+wlwZ9v1ylh56popD0faYjMaSQwXKMBNH08dMisqUj9Vt94JY2pe Dz2TSVIvCDLlyBGT73nN =yjW8 -----END PGP SIGNATURE-----

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 24/06/2015 15:11, Guillaume Lefranc wrote: > Sylvain, > > On Wed, Jun 24, 2015 at 3:06 PM, Sylvain Raybaud > <sylvain.raybaud(a)green-communications.fr > <mailto:sylvain.raybaud@green-communications.fr>> wrote: > > >> >> I forgot to mention in my previous mail that after starting >> mariadb in the first node I run: >> >> mysql -u root --execute="SET GLOBAL >> wsrep_cluster_address='gcomm://';" >> >> >> Don't do the above. Since you are starting the cluster with >> --wsrep_new_cluster, that's enough. I'm not sure of what it >> would do but I'd rather avoid to bootstrap the cluster two >> times. > > If I don't, the cluster does not start at all, all I get is a > disconnected cluster of size 0 on node #1, exactly as described > here: > https://mariadb.com/blog/mariadb-galera-cluster-quirk-bootstrapping > > > > Yes, but this happens for a good reason and the manual is quite > clear about that: You didn't set wsrep_cluster_address in your > my.cnf. I would recommend to set it on all nodes, as it can cause > all kinds of things to go wrong in the future (imagine you reboot > your 1st node, it has no peers to reconnect to), plus some other > side effects I cannot envision. So recommendation is really to have > this set on all nodes with IP addresses of each node, in your case > wsrep_cluster_address=gcomm://192.168.1.77 > <http://192.168.1.77/>,192.168.1.80,[IP of node 3] Got it, doing that :) I tried setting wsrep_sst_method to mysqldump instead of rsync and it fails. Here are the error logs: node #1: http://pastebin.com/UXr378mC node #2: http://pastebin.com/4xEi2ncS node #3: http://pastebin.com/LWvmrdAt Still investigating. - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVirDlAAoJEEkkwl4JtJ9ytK4P/2d8QMDUKbN48MT1/mA4kI4x n2Y1VOahIUWxG6YZjenAHSi96VUpzIkpk5VQvzeozIRTtmsFlfhsitwZwd8pERmu Usse6+fptio2iHpzabyterMmyXrEcI9Dtdu9/4KBPBKs1WBdShDkmEvUJ279oaIU uj3cuOMWo05snac3wFuSk53edCaUPT6CJfTHUn+FkmFQbRzEE89Q2IW+FKdUW23L X9XOuabR5iu1/5FeJxmYut3yS10slByebofjQlMGFdRZ20ZD60phRjuIqr4VtgK+ Pl6wwMlAYMgrwvGxNUOzA3czm23oulfwcziFRk8DA2xkLxJyYDW8XDzGphoBWLzZ oaQIE+ikYNFEUDPGUVvBRnVigmi2NksXz7s8ND8oSROwoXqzgH+MhR1kYdcysPKp aEs94h7uwh1u+0wHVNFmd7xNwbZyJxeb+ICB7GxpTlLMk8EbUZzbuGiiEcZaWNb3 IOfifbs8sc5/eE3Jrds67cFaUsjAchyNLQ2eNraoiDN1b8KD6nflmU8M5bdJ9UYH ICfpa9CSA2+qYWHWh9XfEEwb3Ugal1i/xSqlbObkVeqAlG8/PWbA5ubeBlGhzVDF jObLYVhh5c+bKLtKXPmzi1fvvsCaSiYRvXFxetmWO+8BpL27i37dfhslyc8Fk6/j +YwjwwY+st1sIm1oE/5M =Lvhi -----END PGP SIGNATURE-----

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 24/06/2015 15:00, Guillaume Lefranc wrote: > > > Nope, the database is empty (I just created it with > mysql_install_db; also all nodes are fresh installs). Only the > first node has SYNCED in its log indeed: # grep SYNCED > buildroot.err 700101 0:01:10 [Note] WSREP: Shifting JOINED -> > SYNCED (TO: 0) > > The two others show neither SYNCED or any reference to mysql.sock. > > > > I forgot to mention in my previous mail that after starting mariadb > in the first node I run: > > mysql -u root --execute="SET GLOBAL > wsrep_cluster_address='gcomm://';" > > > Don't do the above. Since you are starting the cluster with > --wsrep_new_cluster, that's enough. I'm not sure of what it would > do but I'd rather avoid to bootstrap the cluster two times. If I don't, the cluster does not start at all, all I get is a disconnected cluster of size 0 on node #1, exactly as described here: https://mariadb.com/blog/mariadb-galera-cluster-quirk-bootstrapping > >> Does this mean that mariadb tries to sync nodes but for some >> reason the script hangs, the nodes are never sync and remain >> unusable? > > I'm afraid that must be something along those lines. I have the > following suspicions: > > * SELinux or Apparmor not disabled, causing the SST to hang > forever. * Ports not open on the firewall (for the record you need > 3306, but also 4444, 4567 and 4568). > Ok, I'm following this lead. I'll let you know. > -- Guillaume Lefranc Consultant / RemoteDBA Services - MariaDB > Corporation Ab - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJViqtSAAoJEEkkwl4JtJ9yDtMP/RC8SkWQSd4iU2FMJn8Hj1LW K4Y9n0FETIu7pUpFiqAg13l+4ocEblv+SlYPPzAI5bdpBPVTA+EG7ypkyQgolPxX 5TQUUGjIM0rN675IVcDQalX8KPytSR8LkNDvB95oE71fKjOB9Ne71P8YpfdRMZgU 9Y7HMFPxckJulZOcoKb/4erOC9txgn69MY9YZ4QVQKahxK6vKfnbOOkS88SHNojy KYeLrMWR6Jk0wmPz4ivMveRzJfGrCI8cxWGi26btxGfhWXUvq2/Wv0nYrfByN9ZH kRd7Lo5RHnTzwT+EGNVtgkesA1L6UNgUo/N3fW8hGSnpIFuK+4CMcHjAsG6IxXVl iX1uP4H56OydRZh3tzdnY7+vjAN6dz6J6bo1X/mtaUMcKk+f/whkbxy6+Ggeq92d gWjoECDPJUd4R5JzTy4uMDhstg3RKX0KL32AGajPUJmFLAhmA9vkSRh1Wz9MVIBQ /cPMSndhLFjlSRJAfdh2GHy8y1xCjLHxR7k1qQqf7AhKTYCE2Pq21ZTYRdJZkP6S vo0W+KXcV4CvR0+rT15DJCUodwSak+r6GOCJ86koVs64JtcSyuLaqTKvtn0AjX4y r+JG5G9WwKcbAx77BQk75EmL86rnuICFaXhXqe6HYs0Pi7xFuKCtLYZrAFtn2r5H YhApUDevV8dNh4Vwl6wn =iVBf -----END PGP SIGNATURE-----

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 24/06/2015 14:38, Guillaume Lefranc wrote: > Also if I'm correct, you must have rsync running on the processlist > of node 2. As mentioned in my previous email, I don't have much data in this db. However, I do have rsync running on nodes #2 and #3, even long after I started mariadb: # ps aux | grep rsync 464 mysql sh -c wsrep_sst_rsync --role 'joiner' --address '192.168.1.80' --auth '' --datadir '/var/lib/mysql/' --defaults-file '/etc/mysql/my.cnf' --parent '457' --binlog '/var/lib/mysql/mariadb-bin' 465 mysql {wsrep_sst_rsync} /bin/bash -ue /usr//bin/wsrep_sst_rsync --role joiner --address 192.168.1.80 --auth --datadir /var/lib/mysql/ --defaults-file /etc/mysql/my.cnf --parent 457 --binlog /var/lib/mysql/mariadb-bin 493 mysql rsync --daemon --no-detach --port 4444 --config /var/lib/mysql//rsync_sst.conf 14589 root grep rsync Does this mean that mariadb tries to sync nodes but for some reason the script hangs, the nodes are never sync and remain unusable? - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJViqk1AAoJEEkkwl4JtJ9yawwP/jH6XsdNLwjYgo40baiMn6/e lo6uls7yq+GHnw3GC3R/YBXYqRpBWv2rPi6hKf1wFnXlyP7rN3xY3zR3bnICH0G9 Y/y+RLdeWdzEFncfz7Vxq/kY771ITjAsha+eGdC9ShUkC61FyQ1lOXjj/5N6eHpS UQhkuoHJoP8/sdLN6Q3jnBUOUKZZIpSG7QsRG+Th8RuERPkJP+slDAkTsvM1qe6+ kCSaQugfUrtobxm5glAGSYlprRQ2EojTYDnS+qpqeBKwwAPA8g+u/a25AayDl5MB 32fWBH6iy2DjqnXnRdeS7BX/jhGAXvy8zJGylnfLakRQFDEUScpjZlOB2Bp0UtuC qKRkV35eDDu1LTGHCbWu5dQx1D3TsbSIi571Ffiw4vZtwVgTRsT8LLV8opnA6aa1 ixbEfz3P5lujB4cDASMDsrbTYHQ4MU78G1QnXjVRMQS7PwPaDjAk/zDW9krengyS jfZSR7w1fYOsOyb0elxEl2tzkW6pDoGhAQ3P3ETM++ruyv2gjoxYVaN+GH7vPlee Ooz75NoDPg6t97TfOP1B60QhSHK7Xwp7ISBSJIZd1LXM64MtgxB2vh+bTdGV/C5x JXVvHmihBdsqX+4e78WSxoydb4ZyBDRLG+0jwDmPoUcYuYYxvtH1DYgdGBgfeN54 T5+/U42/4oSSZ1C+HSGz =OXeD -----END PGP SIGNATURE-----

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Re: [Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 24/06/2015 14:38, Guillaume Lefranc wrote: > Sylvain, > > the logs tell that node 2 and 3 have joined the cluster, but that > they are not yet in sync. This is very clear in logs of node 2: > > 700101 0:00:35 [Note] WSREP: *State transfer required:* Group > state: 7cf7113a-1dd3-11b2-a623-76b507fb8ed5:0 Local state: > 00000000-0000-0000-0000-000000000000:-1 700101 0:00:35 [Note] > WSREP: New cluster view: global state: > 7cf7113a-1dd3-11b2-a623-76b507fb8ed5:0, view# 11: Primary, number > of nodes: 3, my index: 0, protocol version 3 700101 0:00:35 > [Warning] WSREP: *Gap in state sequence. Need state transfer.* > 700101 0:00:35 [Note] WSREP: Running: 'wsrep_sst_rsync --role > 'joiner' --address '192.168.1.80' --auth '' --datadir > '/var/lib/mysql/' --defaults-file '/etc/mysql/my.cnf' --parent > '420' --binlog '/var/lib/mysql/mariadb-bin' ' > > I assumed that you started your cluster empty, which might not be > the case. If you have several gigabytes of data on the first node, > you have to allow some time until rsync has finished copying the > data to the other nodes. You can do that by tailing the error log > of node 2 until the SYNCED state keyword appears. Also if I'm > correct, you must have rsync running on the processlist of node 2. Nope, the database is empty (I just created it with mysql_install_db; also all nodes are fresh installs). Only the first node has SYNCED in its log indeed: # grep SYNCED buildroot.err 700101 0:01:10 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 0) The two others show neither SYNCED or any reference to mysql.sock. I forgot to mention in my previous mail that after starting mariadb in the first node I run: mysql -u root --execute="SET GLOBAL wsrep_cluster_address='gcomm://';" but you probably guessed since I'd get a different error if I hadn't. - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJViqhmAAoJEEkkwl4JtJ9y7ioP/A5sGSaNrJ8jJhPaaN38XIEQ UAjUxUFyQQBEuzmvo3LY5PoTXKNXjWzhMHL6+bFqvIYb7RXa2mC/jm/gowuNIE8v jBz8NOjUbH/nayWFQquguEOe1EBO2671CNWsGmpqzKkxj5CVq4SykTk34+d6xUye 7EubHiOUKYK5BuILY3zBaVzxGeBlHaZsZCx7C65a81bgB+0wOMFQED2u5u24VbwA pm6+q+psR8O0H6EdeMzgPCvxgQZeGi+HahXWAZuts3/mkTbFpEgFeg/xt8x9jIg9 vz6K6Q5TD43NaMs+XD86Z4mgGPBaEapZKc9YQV8Ge58gngkgZt9L4q+mi//ISZ1z CCbsQlUd6JqLethWLAIr0VdXLU26P28kVza4aAqjnkl9Pz1s4CmweSg4tuo7avXk DDV9//7kOFbAKdLJX+egpHu+fb+WwgWeSKNzdauKjTGfH+qPSPb10j2GSowedEK/ WzCWsZb0GZyn8gHRPMDC6olSs+daCp8imWqKw70LOAjCzMcBrFG/ynMWB8vBoHqU Q5KgEhfUStDLMMZkqgI1Ov91LZDPPG2zr0mjwe7+k7xc5GO6gtih/F8atruT2PRu cdgEvapcR8Qp+fsBlzVdeK15yVrxaWrZDDhh+YaYuLS2kzDW3KGwqHUNYykhyLcl QgaIDguJcH4ye95Sb2Cv =CpJL -----END PGP SIGNATURE-----

1 0

[Maria-discuss] Can't connect to local MySQL server through socket
by Sylvain Raybaud 24 Jun '15

24 Jun '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi I'm setting up a 3 nodes cluster of mariadb+galera. The cluster seems to be created properly: mysql -u root -p -e 'SELECT VARIABLE_VALUE as "cluster size" FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME="wsrep_cluster_size"' Enter password: +--------------+ | cluster size | +--------------+ | 3 | +--------------+ Problem is, I can only connect to mysql on the first node I create. On the other nodes it gives me: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111 "Connection refused") /tmp/mysql.sock does exist and has correct permissions. However it does not seem to be in listening state since it is not shown by netstat -l. I feel this must be some simple configuration problem but I'm quite stuck. My configuration can be found at: http://pastebin.com/gVie8uKp Note that since I'm compiling and running mariadb in buildroot I do not have /etc/mysql/debian.cnf. Any idea? Thanks, - -- Sylvain Raybaud www.green-communications.fr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVipzlAAoJEEkkwl4JtJ9yn8MP/A3Ld0XxNmkO8DCh2znYud6u E3Wiuw35v+wD0EZx05H4nFT2eI/4G8tMCtWy1B0hJx0qiuyjMItXKMqL6yOIrZfx cA4WAikesCwrLCXZgmL5xj0/Ow+8hzNLctCxMNAmJvYUPcW4YyJkinA3C1ch65aa arrfg1/Z8B40VyapjeOc1T7jr97S1465+YMmB6G5aD/3aFBORYWEjqhMSutRKhfJ K7J6KIFQQwrL0gRqtiPwsMxsD2QW/bc8hQQvMz0Nuy7iriY3YZCCvPqtFA+r8cnp 6P4GB0Bp5YL7HY7SO5YuAKiUYmtb5koBoD1oMtuFBVNIFLTP5X8yWErZr2pZXRbx 97oCBWisp3VqQjPCJJBYLrmP4qx5aYU6+C/vcc51Kr+OEFOLeyszVFM85bPx5+ZL d8W5iuOUSBpguQ3P3dQV1PnBWGqe0FcotSHnDSQMD6lxFfQ/s09er3okqob/Wo1k cqKkqPfjMNUaXcE4yf6/UN/ytNMOnPyHVPQNaIsQmiS+TYoIEtf6T2nItMjfoCAz OJ1PaACOzXrvx3rClT/ay6w/TAjILM0O9GiIYsHhdJRrapgu59r57olZouTbmooo VpU7fKq9LnF3dgZOMFW1VBnegfseXWuyCmzXEXx7fiNpvzEukmDrhFpPAuNYdJ9Y Md+Mm44tp+FpWhFfrU6u =ybAn -----END PGP SIGNATURE-----

2 2

[Maria-discuss] Bug in MAX() function?
by Benoit Panizzon 23 Jun '15

23 Jun '15

Hi all I stumbled over that problem, while trying to graph mail traffic.. I have two different counters for emails sent with authentication and without. Aggregated per hour. I would like to total the both values per row, to create a graph of outgoing emails per hour. MariaDB [maildb]> select mail_out_anon,mail_out_auth from domaincounters; +---------------+---------------+ | mail_out_anon | mail_out_auth | +---------------+---------------+ | 8 | 58 | | 8 | 48 | | 4 | 63 | | 9 | 53 | | 2 | 36 | | 0 | 12 | | 3 | 2 | | 0 | 2 | | 0 | 6 | | 0 | 2 | | 0 | 9 | | 0 | 44 | | 14 | 63 | | 0 | 96 | | 7 | 43 | | 4 | 61 | | 2 | 43 | | 2 | 66 | | 0 | 86 | | 6 | 77 | | 6 | 55 | | 0 | 63 | | 6 | 48 | | 2 | 52 | +---------------+---------------+ > select mail_out_anon+mail_out_auth as mail_out_total from domaincounters; +-----------------------------+ | mail_out_anon+mail_out_auth | +-----------------------------+ | 70 | | 56 | | 67 | | 62 | | 38 | | 12 | | 5 | | 2 | | 6 | | 2 | | 9 | | 44 | | 77 | | 96 | | 50 | | 65 | | 45 | | 68 | | 86 | | 83 | | 61 | | 63 | | 54 | | 54 | +-----------------------------+ Now I need the max value of that addition to auto-scale the graph. MariaDB [maildb]> select MAX(mail_out_anon+mail_out_auth) +----------------------------------+ | MAX(mail_out_anon+mail_out_auth) | +----------------------------------+ | 187 | +----------------------------------+ What did MariaDB count here? I was expecting a value 96 which is the largest value of all the additions. Also trying various ways of first using GREATEST() always returns a way to high value. Is it a bug, or did I do something wrong? Mit freundlichen Grüssen Benoit Panizzon -- I m p r o W a r e A G - ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 07 CH-4133 Pratteln Fax +41 61 826 93 02 Schweiz Web http://www.imp.ch ______________________________________________________

6 13

[Maria-discuss] View missing from EXPLAIN after ORDER BY removed from definition
by Rhys Campbell 22 Jun '15

22 Jun '15

Hello All, I had an interesting problem presented to me this morning. A seemingly simple query was running for ages and filling up /tmp causing MariaDB to crash. Now, this isn't perhaps the best designed database but the query didn't seem to be that bad. T1 is a table but t2 is a view (modified definitions provided below) SELECT SQL_NO_CACHE p.col1 FROM t1 p LEFT OUTER JOIN t2 ot ON p.col1 = ot.col2 LIMIT 500; This has the following explain plan... id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY P1 index \N -- 4 \N 85977207 100 Using index; Using temporary; Using filesort 1 PRIMARY p1 ref IX_1 IX_1 8 -- 1 100 Using where; Using index 3 DEPENDENT SUBQUERY p2 ref IX_1 IX_1 8 -- 1 100 Using where; Using index To rectify this I modified an index that was use by the view (note the key_len = 8 in above, went to 106 with the new index when EXPLAINed separately.). I also removed the ORDER BY from the view. After this the query performance much better returning in ~ 250 milliseconds. Removal of the ORDER By was primarily responsible for the performance improvement. However the EXPLAIN plan now returns this... id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY p index \N idx 4 \N 85977207 100 Using index Why is the view now missing from the EXPLAIN? Is this a bug or is there something else going on here? Cheers, Rhys CREATE TABLE `t1` ( `col1` BIGINT(20) NOT NULL, `col2` ENUM(val1, val2, val3) COLLATE latin1_bin NOT NULL, `col3` CHAR(2) CHARACTER SET latin1 NOT NULL, `col4` INT(10) UNSIGNED DEFAULT NULL, `col5` TINYINT(1) DEFAULT '1', `col6` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `col7` VARCHAR(100) CHARACTER SET latin1 DEFAULT NULL, `col8` VARCHAR(10) CHARACTER SET latin1 DEFAULT NULL, `col9` VARCHAR(32) CHARACTER SET latin1 DEFAULT NULL, `col10` VARCHAR(10) CHARACTER SET latin1 DEFAULT NULL, `col11` VARCHAR(255) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL, `col12` VARCHAR(1024) CHARACTER SET utf8 COLLATE utf8_unicode_ci DEFAULT NULL, `col13` DECIMAL(16,6) DEFAULT NULL, `col14` DECIMAL(16,6) DEFAULT NULL, `col15` BIGINT(20) DEFAULT NULL, `col16` BIGINT(20) DEFAULT NULL, `col17` BIGINT(20) DEFAULT NULL, `col18` BIGINT(20) DEFAULT NULL, `col19` CHAR(8) CHARACTER SET latin1 DEFAULT NULL, `col20` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col21` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col22` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col23` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col24` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col25` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col26` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col27` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col28` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col29` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, `col30` VARCHAR(45) CHARACTER SET latin1 DEFAULT NULL, PRIMARY KEY (`col1`), .. /* REMOVED **/ KEY `idx_lastupdated` (`col6`) ) ENGINE=TokuDB DEFAULT CHARSET=latin1 COLLATE=latin1_bin `compression`='tokudb_zlib' The join view has the following definition... SELECT /* COLS REMOVED */ FROM `t2` `p1` WHERE (`p1`.`col1` = (SELECT `p2`.`col2 ` FROM `t2` `p2` WHERE ((`p2`.`col2` = `p1`.`mcol2`) AND (`p2`.`source` = 'src')) ORDER BY `p2`.`col3` DESC LIMIT 1)) ORDER BY `p1`.`col2`; Rhys Campbell Database Administrator TradingScreen, Inc. 23 York House, 5th Floor London WC2B 6UJ Email: rhys.campbell(a)tradingscreen.com<mailto:rhys.campbell@tradingscreen.com> Follow TradingScreen on Twitter<http://twitter.com/#!/TradingScreen> , Facebook<http://www.facebook.com/pages/TradingScreen/214046251945650> and our blog Trading Smarter<tradingsmarter.tradingscreen.com> This message is intended only for the recipient(s) named above and may contain confidential information. If you are not an intended recipient, you should not review, distribute or copy this message. Please notify the sender immediately by e-mail if you have received this message in error and delete it from your system.

3 5

[Maria-discuss] Upgrading mariadb-galera-server
by Tom Worster 19 Jun '15

19 Jun '15

Can I upgrade a production cluster from 10.0.15 to 10.0.19 while the cluster remains in service, upgrading one node at a time?

4 7

[Maria-discuss] MariaDB 10.0.20 now available
by Daniel Bartholomew 18 Jun '15

18 Jun '15

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.0.20. This is a Stable (GA) release. See the Release Notes and Changelog for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 10.0.20 - Release Notes: https://mariadb.com/kb/en/mariadb-10020-release-notes - Changelog: https://mariadb.com/kb/en/mariadb-10020-changelog - Downloads: https://downloads.mariadb.org/mariadb/10.0.20 About MariaDB 10.0: - https://mariadb.com/kb/en/what-is-mariadb-100/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ - - MariaDB Webinars - - - - - - - - - - - - - - - - - - - - - - - - - There are several upcoming MariaDB-focused webinars and many previously held ones available to watch on an on-demand basis at: - https://mariadb.com/news-events/webinars - - MariaDB Books - - - - - - - - - - - - - - - - - - - - - - - - - - There is an ever-growing library of MariaDB books available to help you get the most out of MariaDB. See the MariaDB Books page for details and links: - https://mariadb.com/kb/en/mariadb/books/ - - User Feedback plugin - - - - - - - - - - - - - - - - - - - - - - - MariaDB includes a User Feedback plugin. This plugin is disabled by default. If enabled, it submits basic, completely anonymous MariaDB usage information. This information is used by the developers to track trends in MariaDB usage to better guide development efforts. If you would like to help make MariaDB better, please add "feedback=ON" to your my.cnf or my.ini file! See http://mariadb.com/kb/en/user-feedback-plugin for more information. - - Quality - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The project always strives for quality, but in reality, nothing is perfect. Please take time to report any issues you encounter at: - http://mariadb.org/jira - - Support MariaDB - - - - - - - - - - - - - - - - - - - - - - - - - - If you would like to contribute to the MariaDB Foundation, please see the "contributing" and "donations" pages. We also have merchandise available in a cafepress store. All proceeds go to support the MariaDB Foundation. - https://mariadb.com/kb/en/contributing - https://mariadb.org/en/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledge Base - http://mariadb.com/kb

1 0

[Maria-discuss] New Question: How can i add another new slave to an existing replication configuration?
by AskMonty KB 16 Jun '15

16 Jun '15

Hello, A new question has been asked in "Standard Replication" by wschwauer. Please answer it at http://mariadb.com/kb/en/how-can-i-add-another-new-slave-to-an-existing-rep… as the person asking the question may not be subscribed to the mailing list. -------------------------------- How can i add another new slave to an existing master slave replication configuration? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/how-can-i-add-another-new-slave-to-an-existing-rep…

1 0

[Maria-discuss] InnoDB: slow insert (too many fsyncs ?)
by Julien Muchembled 15 Jun '15

15 Jun '15

Hello, I am trying to optimize the insertion of 124 GB of data into InnoDB and it takes much more time than I expected. For the moment this is only a test before migrating prod, using a USB HDD. Prod has much faster storage but I prefer to check if there's anything wrong in my MariaDB setup. The source DB is read as less than 1MB/s with less than 20% CPU usage (<10% for mysqld and <10% for the client app doing the migration). I know that several unsafe settings can be used to import data but I won't be able to use them for the migration of prod. This is because the migration will be done transparently in background, the old db being accessed for not yet migrated data. For the same reason, indexes can't be disabled. Anyway, it was slow that for the moment, I only did a full test with unsafe settings: innodb_flush_log_at_trx_commit = 0 innodb_flush_method = nosync innodb_doublewrite = 0 sync_frm = 0 It took exactly 19.8 hours to import all the data. See attached file for all parameters and detailed statistics. (Sorry for the 'show status' outputs, no idea what I expected to get when I tried 'flush status', whereas 21G were already processed. So 'show status.20941778944' is the output just before the flush, and 'show status' is after everything was finished) The schema of tables can be found here: http://git.erp5.org/gitweb/neoppod.git/blob/HEAD:/neo/storage/database/mysq… 1. fsync Not sure if I read 'show status' correctly, but I'd say it's actually 6 fsyncs per second, and this matches what I see with strace. Why not 0 whereas I disabled them ? There's also less than 1 COMMIT per second, so even without disabling fsyncs I was surprised to see so many in the middle of transactions. 2. Write amplification During my first tests, I saw with iotop that mysqld wrote at 10MB/s. Which means a factor 10. With doublewrite disabled, it's rather a factor 5. These ratios are probably underestimated. For better interpretation of the statistics, I should add that: - source DB is uncompressed but the file format is very compact - most of the imported data ends up in the 'data.value' column, and most values are zlib-compressed, with also deduplication The resulting ibdata is only 70GB. Is this write amplification only caused by indexes & doublewrite ? Thanks, Julien

3 3

[Maria-discuss] Questions regarding Galera Cluster
by Dan Storm 15 Jun '15

15 Jun '15

Hello. I just saw this YouTube video: https://www.youtube.com/watch?v=hYSGsgIyshs It was really informative and it seems like a simple and easy setup. Now, I have a few questions which is regarding maintaining a Galera Cluster, which I hope to get some answers on. 1. A cluster should have an odd number of nodes to avoid brain split. In case I hit the wall with insufficient disk space and I need to scale up my servers, which steps would be the appropriate? My initial thoughts would be taking down one node at a time and add a larger node, what for it to have replicated from the other nodes. Would the - now even numbered of nodes - handle this? And what will have when I do this to the bootstrapped server (the one the others connects to)? 2. According to the video, a slave replication of the cluster would be a way of securing my data in case of disaster. Would creating dumps regularly not suffice? And secondly, in case of hardware failure on one of the nodes, bringing in a new node (probably asking the same as before) would hopefully just replicate the data when it joins again? Thank you for your time. -- Dan Storm

4 3

[Maria-discuss] new table format and CONNECT engine
by Roberto Spadim 14 Jun '15

14 Jun '15

Hi guys, I have a file format that is fixed size, and i want to include at CONNECT engine, anyone could help me? it's a file with 6 columns each one fixed size (1xstring, 1x time64_t, 1x ulong (64bits), 3x double(64bits), each row have 110bytes starting at a fixed position, the file have a header with last update time (time64_t) and a row count (32bits ulong) the file struct is easy but i don't know how to include it with connect engine i just want read access no write thanks :) -- Roberto Spadim SPAEmpresarial - Software ERP Eng. Automação e Controle

3 8

Re: [Maria-discuss] ON DELETE/UPDATE/INSERT Triggers
by Rhys Campbell 12 Jun '15

12 Jun '15

Just to add another one into the mix (and I guess it may be related in some sense)... For ON DELETE triggers it currently fires per row. This impacts performance significantly in some situations when a lot of rows are processed. MSSQL gets around this by creating virtual tables, INSERTED & DELETED (in effect similar to the OLD / NEW tags) and the trigger executes only once... https://msdn.microsoft.com/en-us/library/ms191300.aspx Cheers, Rhys -----Original Message----- From: Maria-discuss [mailto:maria-discuss-bounces+rhys.campbell=tradingscreen.com@lists.launchpad.net] On Behalf Of Federico Razzoli Sent: 12 June 2015 04:02 To: Geoff Montee; Roberto Spadim Cc: MariaDB discuss Subject: Re: [Maria-discuss] DELETE FROM RETURNING In the meanwhile, we can use ON DELETE triggers. But the request is a good idea, because it is a common operation when we want to move some rows to history tables. Federico -------------------------------------------- Gio 11/6/15, Roberto Spadim <roberto(a)spadim.com.br> ha scritto: Oggetto: Re: [Maria-discuss] DELETE FROM RETURNING A: "Geoff Montee" <geoff.montee(a)gmail.com> Cc: "MariaDB discuss" <maria-discuss(a)lists.launchpad.net> Data: Giovedì 11 giugno 2015, 21:09 +1, good idea, today i execute an insert, and a delete 2015-06-11 16:07 GMT-03:00 Geoff Montee <geoff.montee(a)gmail.com>: Hi Rhys, On Wed, Jun 10, 2015 at 1:23 AM, Rhys Campbell <Rhys.Campbell(a)tradingscreen.com> wrote: > " This might be better suited as a feature request on the MariaDB JIRA." > > I got chastised for doing that before so I'm trying to play nice! ;-) > I don't know why you were chastised in the past, but I've added this to the JIRA: https://mariadb.atlassian.net/browse/MDEV-8307 It sure sounds like a useful feature to me. Thanks for the suggestion! Geoff _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : maria-discuss(a)lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp -- Roberto Spadim SPAEmpresarial - Software ERPEng. Automação e Controle -----Segue allegato----- _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : maria-discuss(a)lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : maria-discuss(a)lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp

3 3

[Maria-discuss] DELETE FROM RETURNING
by Rhys Campbell 12 Jun '15

12 Jun '15

Hello All, Just regarding the RETURNING feature introduced into MariaDB 10.0.5 https://mariadb.com/kb/en/mariadb/delete/ It would be useful, similar to the OUTPUT clause in MSSQL, if we could INSERT the data sent back from a returning clause in a single statement. Something like... CREATE TABEL deleted_ids ( Id INT NOT NULL PRIMARY KEY ); INSERT INTO deleted_ids DELETE FROM t1 WHERE id < 999 RETURNING id; Rhys Campbell Database Administrator TradingScreen, Inc. 23 York House, 5th Floor London WC2B 6UJ Email: rhys.campbell(a)tradingscreen.com<mailto:rhys.campbell@tradingscreen.com> Follow TradingScreen on Twitter<http://twitter.com/#!/TradingScreen> , Facebook<http://www.facebook.com/pages/TradingScreen/214046251945650> and our blog Trading Smarter<tradingsmarter.tradingscreen.com> This message is intended only for the recipient(s) named above and may contain confidential information. If you are not an intended recipient, you should not review, distribute or copy this message. Please notify the sender immediately by e-mail if you have received this message in error and delete it from your system.

5 11

[Maria-discuss] MariaDB 5.5 apt repo for Ubuntu 10.04 no longer exists
by Bryan Traywick 11 Jun '15

11 Jun '15

I noticed today that the MariaDB 5.5 apt repository for Ubuntu 10.04 no longer exists. At first I thought this was due to the EOL for 10.04 but the 10.0 apt repository is still present in the repository configurator. I couldn’t find an announcement announcing the termination of these repositories. Is this a temporary oversight or are these apt repositories gone forever? Thanks, — Bryan Traywick

2 1

[Maria-discuss] New Question: MariaDB service fails to start after InnoDB/XtraDB crash
by AskMonty KB 11 Jun '15

11 Jun '15

Hello, A new question has been asked in "XtraDB and InnoDB" by kushkash. Please answer it at http://mariadb.com/kb/en/mariadb-service-fails-to-start-after-innodbxtradb-… as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hi, I've been running a script, inserting a large amount of data to several MySQL tables. Apparently, InnoDB crashed at some point (when ibdata1 reached ~1.6 Gb). I had to restart the computer and when I tried to restart MariaDB service, I got the following errors: Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: 150611 8:58:02 InnoDB: Operating system error number 5 in a file operation. Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: InnoDB: Error number 5 means 'Input/output error'. Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: InnoDB: Some operating system error numbers are described at Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: InnoDB: http://dev.mysql.com/doc/refman/5.5/en/operating-system-error-codes.html Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: InnoDB: File operation call: 'read'. Jun 11 08:58:02 honolulu.bi.technion.ac.il mysqld_safe[7970]: InnoDB: Cannot continue operation.' Jun 11 08:58:02 honolulu.bi.technion.ac.il systemd[1]: mariadb.service: main process exited, code=exited, status=1/FAILURE Jun 11 08:58:02 honolulu.bi.technion.ac.il systemd[1]: mariadb.service: control process exited, code=exited status=1 Jun 11 08:58:02 honolulu.bi.technion.ac.il systemd[1]: Failed to start MariaDB database server. Jun 11 08:58:02 honolulu.bi.technion.ac.il systemd[1]: Unit mariadb.service entered failed state. I checked /var/log/mariadb/mariadb.log to find out what might have caused the crash: 140911 10:40:38 InnoDB: Error: Write to file ./ibdata1 failed at offset 0 220200960. InnoDB: 1048576 bytes should have been written, only 0 were written. InnoDB: Operating system error number 28. InnoDB: Check that your OS and file system support files of this size. InnoDB: Check also that the disk is not full or a disk quota exceeded. InnoDB: Error number 28 means 'No space left on device'. InnoDB: Some operating system error numbers are described at InnoDB: http://dev.mysql.com/doc/refman/5.5/en/operating-system-error-codes.html 140911 10:40:38 InnoDB: Assertion failure in thread 139942049851136 in file os0file.c line 4382 InnoDB: Failing assertion: ret InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately a150505 07:59:38 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 150505 07:59:38 mysqld_safe WSREP: Running position recovery with --log_error='/var/lib/mysql/wsrep_recovery.SFCcCu' --pid-file='/var/lib/mysql/honolulu.bi.technion.ac.il-recover.pid' 150505 07:59:41 mysqld_safe WSREP: Recovered position 00000000-0000-0000-0000-000000000000:-1 150505 7:59:41 [Note] WSREP: wsrep_start_position var submitted: '00000000-0000-0000-0000-000000000000:-1' 150505 7:59:41 InnoDB: The InnoDB memory heap is disabled 150505 7:59:41 InnoDB: Mutexes and rw_locks use GCC atomic builtins 150505 7:59:41 InnoDB: Compressed tables use zlib 1.2.8 150505 7:59:41 InnoDB: Using Linux native AIO 150505 7:59:41 InnoDB: Initializing buffer pool, size = 128.0M 150505 7:59:41 InnoDB: Completed initialization of buffer pool 150505 7:59:41 InnoDB: highest supported file format is Barracuda. 150505 7:59:41 InnoDB: Waiting for the background threads to start 150505 7:59:42 Percona XtraDB (http://www.percona.com) 5.5.37-MariaDB-35.0 started; log sequence number 458740332 150505 7:59:42 [Note] Plugin 'FEEDBACK' is disabled. 150505 7:59:42 [Note] Server socket created on IP: '0.0.0.0'. 150505 7:59:42 [ERROR] mysqld: Table './mysql/user' is marked as crashed and should be repaired 150505 7:59:42 [Warning] Checking table: './mysql/user' 150505 7:59:42 [ERROR] mysql.user: 1 client is using or hasn't closed the table properly 150505 7:59:42 [ERROR] mysqld: Table './mysql/db' is marked as crashed and should be repaired 150505 7:59:42 [Warning] Checking table: './mysql/db' 150505 7:59:42 [ERROR] mysql.db: 1 client is using or hasn't closed the table properly 150505 7:59:42 [Note] Event Scheduler: Loaded 0 events 150505 7:59:42 [Note] WSREP: Read nil XID from storage engines, skipping position init 150505 7:59:42 [Note] WSREP: wsrep_load(): loading provider library 'none' 150505 7:59:42 [Note] [Debug] WSREP: dummy_init 150505 7:59:42 [Note] /usr/libexec/mysqld: ready for connections. Version: '5.5.38-MariaDB-wsrep' socket: '/var/lib/mysql/mysql.sock' port: 3306 MariaDB Server, wsrep_25.10.r3997 150608 04:43:00 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 150608 04:43:00 mysqld_safe WSREP: Running position recovery with --log_error='/var/lib/mysql/wsrep_recovery.7Yb3bw' --pid-file='/var/lib/mysql/honolulu.bi.technion.ac.il-recover.pid' 150608 04:43:13 mysqld_safe WSREP: Failed to recover position: '150608 4:43:01 InnoDB: The InnoDB memory heap is disabled 150608 4:43:01 InnoDB: Mutexes and rw_locks use GCC atomic builtins 150608 4:43:01 InnoDB: Compressed tables use zlib 1.2.8 150608 4:43:01 InnoDB: Using Linux native AIO 150608 4:43:01 InnoDB: Initializing buffer pool, size = 128.0M 150608 4:43:01 InnoDB: Completed initialization of buffer pool 150608 4:43:01 InnoDB: highest supported file format is Barracuda. InnoDB: Log scan progressed past the checkpoint lsn 4676403586 150608 4:43:01 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... InnoDB: Error: tried to read 1048576 bytes at offset 0 1048576. InnoDB: Was only able to read 655360. 150608 4:43:13 InnoDB: Operating system error number 5 in a file operation. InnoDB: Error number 5 means 'Input/output error'. InnoDB: Some operating system error numbers are described at InnoDB: http://dev.mysql.com/doc/refman/5.5/en/operating-system-error-codes.html InnoDB: File operation call: 'read'. InnoDB: Cannot continue operation.' I have to say that there shouldn't be any disk space problem: df -h Filesystem Size Used Avail Use% Mounted on /dev/sda5 819G 27G 750G 4% / devtmpfs 7.9G 0 7.9G 0% /dev tmpfs 7.9G 0 7.9G 0% /dev/shm tmpfs 7.9G 8.9M 7.9G 1% /run tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup tmpfs 7.9G 12K 7.9G 1% /tmp /dev/sda3 1.9T 123M 1.8T 1% /home /dev/sda2 477M 112M 336M 25% /boot The MariaDB is currently installed in default configuration. I really need help on this issue... 1. What might have cause the problem? Do I have to configure some InnoDB parameters? Maybe the ibdata file size is a problem? 2. How to recover my data and restart the MariaDB service? (I tried all kind of tips I found in other forums, but I couldn't backup the ibdata1 file or start InnoDB in recovery mode). -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/mariadb-service-fails-to-start-after-innodbxtradb-…

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[Maria-discuss] MariaDB 5.5.44 now available
by Daniel Bartholomew 11 Jun '15

11 Jun '15

The MariaDB project is pleased to announce the immediate availability of MariaDB 5.5.44. This is a Stable (GA) release. See the Release Notes and Changelog for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 5.5.44 - Release Notes: https://mariadb.com/kb/en/mariadb-5544-release-notes - Changelog: https://mariadb.com/kb/en/mariadb-5544-changelog - Downloads: https://downloads.mariadb.org/mariadb/5.5.44 About MariaDB 5.5: - https://mariadb.com/kb/en/what-is-mariadb-55/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ - - MariaDB Webinars - - - - - - - - - - - - - - - - - - - - - - - - - There are several upcoming MariaDB-focused webinars and many previously held ones available to watch on an on-demand basis at: - https://mariadb.com/news-events/webinars - - MariaDB Books - - - - - - - - - - - - - - - - - - - - - - - - - - There is an ever-growing library of MariaDB books available to help you get the most out of MariaDB. See the MariaDB Books page for details and links: - https://mariadb.com/kb/en/mariadb/books/ - - User Feedback plugin - - - - - - - - - - - - - - - - - - - - - - - MariaDB includes a User Feedback plugin. This plugin is disabled by default. If enabled, it submits basic, completely anonymous MariaDB usage information. This information is used by the developers to track trends in MariaDB usage to better guide development efforts. If you would like to help make MariaDB better, please add "feedback=ON" to your my.cnf or my.ini file! See http://mariadb.com/kb/en/user-feedback-plugin for more information. - - Quality - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The project always strives for quality, but in reality, nothing is perfect. Please take time to report any issues you encounter at: - http://mariadb.org/jira - - Support MariaDB - - - - - - - - - - - - - - - - - - - - - - - - - - If you would like to contribute to the MariaDB Foundation, please see the "contributing" and "donations" pages. We also have merchandise available in a cafepress store. All proceeds go to support the MariaDB Foundation. - https://mariadb.com/kb/en/contributing - https://mariadb.org/en/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledge Base - http://mariadb.com/kb

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[Maria-discuss] New Question: restrictions on EVENTs in Galera?
by AskMonty KB 10 Jun '15

10 Jun '15

Hello, A new question has been asked in "MariaDB Galera Cluster" by rjasdf. Please answer it at http://mariadb.com/kb/en/restrictions-on-events-in-galera/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Can EVENTs and TRIGGERs be used in Galera Cluster? If so, are there any restrictions? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/restrictions-on-events-in-galera/

1 0

[Maria-discuss] Multi master replication with dynamic IP
by Joseph Onyilo 10 Jun '15

10 Jun '15

Hello, I want setup MariaDB to be able to use dynamic IP address for a multi master replication setup. Although one of the instance will have static IP address. Also, the instances are are in different geographical location. Is this setup possible? Joe.

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[Maria-discuss] 2 node cluster crash
by absolutely_free＠libero.it 10 Jun '15

10 Jun '15

Hi, I have two node cluster with Mariadb (5.5.43) Both servers are equal (RAM, CPU, disk) and they are in same lan segment. I use official MariaDB package from this repository: deb http://mariadb.kisiek.net//repo/5.5/debian wheezy main I use haproxy with this config: # cat haproxy.cfg global log /dev/log local0 log /dev/log local1 notice chroot /var/lib/haproxy user haproxy group haproxy daemon maxconn 8192 defaults retries 2 timeout connect 30s timeout server 600s timeout client 600s log global listen mariadb-cluster bind 0.0.0.0:3306 mode tcp option mysql-check user haproxy option tcpka balance leastconn server node1 192.168.100.1:3307 check maxconn 4096 server node2 192.168.100.2:3307 check maxconn 4096 listen webinterface bind 0.0.0.0:8080 mode http stats enable stats uri / stats realm Strictly\ Private stats auth Username:Password Often (about 1 time per week) several applications that rely on databases on this cluster encounter problems. When this happens, I check on both machines and I see that mysql is running. When I stop mysql on one node (let's say, node2), all returns working fine. I am trying to find the root cause of this behavior. This is "show innodb status" (during crash): *************************** 1. row *************************** Type: InnoDB Name: Status: ===================================== 150423 16:22:13 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 35 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 477706 1_second, 477700 sleeps, 47769 10_second, 15 background, 15 flush srv_master_thread log flush and writes: 507815 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 526170, signal count 1091151 Mutex spin waits 2133026, rounds 7742983, OS waits 186497 RW-shared spins 383830, rounds 2284949, OS waits 64704 RW-excl spins 20327, rounds 8918087, OS waits 271756 Spin rounds per wait: 3.63 mutex, 5.95 RW-shared, 438.73 RW-excl -------- FILE I/O -------- I/O thread 0 state: waiting for completed aio requests (insert buffer thread) I/O thread 1 state: waiting for completed aio requests (log thread) I/O thread 2 state: waiting for completed aio requests (read thread) I/O thread 3 state: waiting for completed aio requests (read thread) I/O thread 4 state: waiting for completed aio requests (read thread) I/O thread 5 state: waiting for completed aio requests (read thread) I/O thread 6 state: waiting for completed aio requests (write thread) I/O thread 7 state: waiting for completed aio requests (write thread) I/O thread 8 state: waiting for completed aio requests (write thread) I/O thread 9 state: waiting for completed aio requests (write thread) Pending normal aio reads: 0 [0, 0, 0, 0] , aio writes: 0 [0, 0, 0, 0] , ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0 Pending flushes (fsync) log: 0; buffer pool: 0 497313 OS file reads, 42388195 OS file writes, 22834746 OS fsyncs 0.17 reads/s, 16384 avg bytes/read, 1.57 writes/s, 1.00 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 213, seg size 215, 46416 merges merged operations: insert 121237, delete mark 2178, delete 701 discarded operations: insert 0, delete mark 0, delete 0 Hash table size 17700827, node heap has 4633 buffer(s) 65.94 hash searches/s, 155.85 non-hash searches/s --- LOG --- Log sequence number 513508907441 Log flushed up to 513508907225 Last checkpoint at 513508907225 Max checkpoint age 848635454 Checkpoint age target 822115597 Modified age 216 Checkpoint age 216 0 pending log writes, 0 pending chkp writes 21724628 log i/o's done, 0.63 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total memory allocated 8816427008; in additional pool allocated 0 Total memory allocated by read views 690656 Internal hash tables (constant factor + variable factor) Adaptive hash index 217517904 (141606616 + 75911288) Page hash 8851208 (buffer pool 0 only) Dictionary cache 38436882 (35403184 + 3033698) File system 328480 (82672 + 245808) Lock system 21567352 (21250568 + 316784) Recovery system 0 (0 + 0) Dictionary memory allocated 3033698 Buffer pool size 524287 Buffer pool size, bytes 8589918208 Free buffers 0 Database pages 519654 Old database pages 191805 Modified db pages 2 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 379103, not young 0 0.17 youngs/s, 0.00 non-youngs/s Pages read 496737, created 768744, written 20279635 0.17 reads/s, 0.00 creates/s, 0.83 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s LRU len: 519654, unzip_LRU len: 0 I/O sum[40]:cur[1], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 1 read views open inside InnoDB 611 transactions active inside InnoDB 611 out of 1000 descriptors used ---OLDEST VIEW--- Normal read view Read view low limit trx n:o 2E3F7975 Read view up limit trx id 2E3D4295 Read view low limit trx id 2E3F7975 Read view individually stored trx ids: Read view trx id 2E3F7974 Read view trx id 2E3F7973 Read view trx id 2E3F796B Read view trx id 2E3F7968 Read view trx id 2E3F7936 Read view trx id 2E3F791E Read view trx id 2E3F7860 Read view trx id 2E3F7859 Read view trx id 2E3F77CE Read view trx id 2E3F76D0 Read view trx id 2E3F75DB Read view trx id 2E3F7578 Read view trx id 2E3F74E3 Read view trx id 2E3F74E0 Read view trx id 2E3F74C2 Read view trx id 2E3F74B1 Read view trx id 2E3F7473 Read view trx id 2E3F7472 Read view trx id 2E3F7441 Read view trx id 2E3F73D2 Read view trx id 2E3F72D1 Read view trx id 2E3F72D0 Read view trx id 2E3F7211 Read view trx id 2E3F71F1 Read view trx id 2E3F71EE Read view trx id 2E3F71ED Read view trx id 2E3F71E1 Read view trx id 2E3F71E0 Read view trx id 2E3F71DF Read view trx id 2E3F713C Read view trx id 2E3F707C Read view trx id 2E3F6F91 Read view trx id 2E3F6C5D Read view trx id 2E3F6C5C Read view trx id 2E3F6C51 Read view trx id 2E3F6C50 Read view trx id 2E3F6C0B Read view trx id 2E3F6B2D Read view trx id 2E3F6AFE Read view trx id 2E3F6AA5 Read view trx id 2E3F69B3 Read view trx id 2E3F695F Read view trx id 2E3F6907 Read view trx id 2E3F68E0 Read view trx id 2E3F6898 Read view trx id 2E3F6878 Read view trx id 2E3F6854 Read view trx id 2E3F682D Read view trx id 2E3F682A Read view trx id 2E3F6813 Read view trx id 2E3F6531 Read view trx id 2E3F61E1 Read view trx id 2E3F6190 Read view trx id 2E3F6147 Read view trx id 2E3F60CE Read view trx id 2E3F5FC3 Read view trx id 2E3F5FC1 Read view trx id 2E3F5F82 Read view trx id 2E3F5F79 Read view trx id 2E3F5F53 Read view trx id 2E3F5F52 Read view trx id 2E3F5EE0 Read view trx id 2E3F5CF1 Read view trx id 2E3F5B28 Read view trx id 2E3F5AFA Read view trx id 2E3F5AE3 Read view trx id 2E3F5995 Read view trx id 2E3F58C8 Read view trx id 2E3F55DF Read view trx id 2E3F5586 Read view trx id 2E3F5393 Read view trx id 2E3F5267 Read view trx id 2E3F524B Read view trx id 2E3F5208 Read view trx id 2E3F4B19 Read view trx id 2E3F49C7 Read view trx id 2E3F4569 Read view trx id 2E3F40D8 Read view trx id 2E3F40D6 Read view trx id 2E3F4095 Read view trx id 2E3F4009 Read view trx id 2E3F3DF6 Read view trx id 2E3F3DE5 Read view trx id 2E3F39D1 Read view trx id 2E3F36E9 Read view trx id 2E3F3666 Read view trx id 2E3F35AF Read view trx id 2E3F340D Read view trx id 2E3F3389 Read view trx id 2E3F3302 Read view trx id 2E3F3298 Read view trx id 2E3F3279 Read view trx id 2E3F3278 Read view trx id 2E3F3199 Read view trx id 2E3F30F3 Read view trx id 2E3F2F41 Read view trx id 2E3F2ECE Read view trx id 2E3F2E12 Read view trx id 2E3F2E07 Read view trx id 2E3F2D2B Read view trx id 2E3F2D22 Read view trx id 2E3F2D21 Read view trx id 2E3F2CC1 Read view trx id 2E3F2A96 Read view trx id 2E3F2A6A Read view trx id 2E3F2A08 Read view trx id 2E3F24C5 Read view trx id 2E3F236A Read view trx id 2E3F2149 Read view trx id 2E3F20D8 Read view trx id 2E3F1FA4 Read view trx id 2E3F1F88 Read view trx id 2E3F1EBF Read view trx id 2E3F1E02 Read view trx id 2E3F1C7C Read view trx id 2E3F1BF9 Read view trx id 2E3F1BE1 Read view trx id 2E3F1BD2 Read view trx id 2E3F1BB5 Read view trx id 2E3F1BA6 Read view trx id 2E3F1BA5 Read view trx id 2E3F1A75 Read view trx id 2E3F19B2 Read view trx id 2E3F191B Read view trx id 2E3F1848 Read view trx id 2E3F17A8 Read view trx id 2E3F1761 Read view trx id 2E3F1501 Read view trx id 2E3F14C6 Read view trx id 2E3F14C5 Read view trx id 2E3F13BA Read view trx id 2E3F13B4 Read view trx id 2E3F11DE Read view trx id 2E3F1102 Read view trx id 2E3F0E4D Read view trx id 2E3F09EA Read view trx id 2E3F0994 Read view trx id 2E3F0993 Read view trx id 2E3F08E3 Read view trx id 2E3F06FE Read view trx id 2E3F06A3 Read view trx id 2E3F050C Read view trx id 2E3F043F Read view trx id 2E3F031D Read view trx id 2E3F0314 Read view trx id 2E3F0194 Read view trx id 2E3F003D Read view trx id 2E3EF007 Read view trx id 2E3EEEBD Read view trx id 2E3EEE8C Read view trx id 2E3EEE83 Read view trx id 2E3EEE70 Read view trx id 2E3EEE06 Read view trx id 2E3EE5B0 Read view trx id 2E3EE51A Read view trx id 2E3EE3E3 Read view trx id 2E3EE3C6 Read view trx id 2E3EE3A4 Read view trx id 2E3EE38A Read view trx id 2E3EE2E3 Read view trx id 2E3EE2CD Read view trx id 2E3EE197 Read view trx id 2E3EE05C Read view trx id 2E3EE05B Read view trx id 2E3EDC81 Read view trx id 2E3EDC4F Read view trx id 2E3EDC06 Read view trx id 2E3EDBC7 Read view trx id 2E3ED910 Read view trx id 2E3ED900 Read view trx id 2E3ED8E4 Read view trx id 2E3ED8B5 Read view trx id 2E3ED77F Read view trx id 2E3ED765 Read view trx id 2E3ED656 Read view trx id 2E3ED3D3 Read view trx id 2E3ED330 Read view trx id 2E3ED214 Read view trx id 2E3ED1C1 Read view trx id 2E3ED1C0 Read view trx id 2E3ED1A0 Read view trx id 2E3ED0F5 Read view trx id 2E3ECEB3 Read view trx id 2E3ECE05 Read view trx id 2E3ECC27 Read view trx id 2E3ECBB1 Read view trx id 2E3ECB95 Read view trx id 2E3ECB4F Read view trx id 2E3ECADE Read view trx id 2E3ECAD5 Read view trx id 2E3EC83E Read view trx id 2E3EC5A4 Read view trx id 2E3EC50E Read view trx id 2E3EC4B1 Read view trx id 2E3EC287 Read view trx id 2E3EC080 Read view trx id 2E3EBFB7 Read view trx id 2E3EBE9E Read view trx id 2E3EBD8A Read view trx id 2E3EBCB8 Read view trx id 2E3EBC33 Read view trx id 2E3EBB70 Read view trx id 2E3EBB3B Read view trx id 2E3EBA2C Read view trx id 2E3EB631 Read view trx id 2E3EB435 Read view trx id 2E3EA1B8 Read view trx id 2E3E9FAA Read view trx id 2E3E9F18 Read view trx id 2E3E9EE4 Read view trx id 2E3E9DAB Read view trx id 2E3E9B23 Read view trx id 2E3E9902 Read view trx id 2E3E9785 Read view trx id 2E3E9781 Read view trx id 2E3E960F Read view trx id 2E3E95FE Read view trx id 2E3E95BA Read view trx id 2E3E927B Read view trx id 2E3E919B Read view trx id 2E3E914B Read view trx id 2E3E908D Read view trx id 2E3E905A Read view trx id 2E3E9052 Read view trx id 2E3E8FD0 Read view trx id 2E3E8FC9 Read view trx id 2E3E8FA0 Read view trx id 2E3E8F9F Read view trx id 2E3E8F8A Read view trx id 2E3E8F87 Read view trx id 2E3E8E9A Read view trx id 2E3E8D88 Read view trx id 2E3E8C14 Read view trx id 2E3E8B71 Read view trx id 2E3E8B44 Read view trx id 2E3E8B1E Read view trx id 2E3E8AD8 Read view trx id 2E3E8A48 Read view trx id 2E3E8980 Read view trx id 2E3E8893 Read view trx id 2E3E87EE Read view trx id 2E3E87ED Read view trx id 2E3E87D6 Read view trx id 2E3E87B5 Read view trx id 2E3E85A1 Read view trx id 2E3E8555 Read view trx id 2E3E8553 Read view trx id 2E3E853E Read view trx id 2E3E84E7 Read view trx id 2E3E84E5 Read view trx id 2E3E84E4 Read view trx id 2E3E84E3 Read view trx id 2E3E849D Read view trx id 2E3E849C Read view trx id 2E3E841F Read view trx id 2E3E83A0 Read view trx id 2E3E8202 Read view trx id 2E3E80AC Read view trx id 2E3E80A3 Read view trx id 2E3E7EA5 Read view trx id 2E3E7CF5 Read view trx id 2E3E7B7B Read view trx id 2E3E7B3A Read view trx id 2E3E7A25 Read view trx id 2E3E7A16 Read view trx id 2E3E79F7 Read view trx id 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id 140580935939840, state: sleeping Number of rows inserted 1374217, updated 259069615, deleted 360531, read 5191170325 0.20 inserts/s, 0.54 updates/s, 0.00 deletes/s, 89.03 reads/s ------------ TABLE LOCK table `roundcube`.`session` trx id 2E3F7859 lock mode IX RECORD LOCKS space id 227 page no 350 n bits 80 index `PRIMARY` of table `roundcube`.`session` trx id 2E3F7859 lock mode S locks rec but not gap waiting ---TRANSACTION 2E3F77CE, ACTIVE 6 sec inserting mysql tables in use 1, locked 1 LOCK WAIT 2 lock struct(s), heap size 376, 1 row lock(s) MySQL thread id 4288287, OS thread handle 0x7fdadfc8d700, query id 44864987 node1 192.168.100.1 roundcube update INSERT INTO `session` (`sess_id`, `vars`, `ip`, `created`, `changed`) VALUES ('44f5q5mncbdqh1kskcsr7018s3', 'bGFuZ3VhZ2V8czo1OiJpdF9JVCI7dGVtcHxiOjE7c2tpbnxzOjU6Im1pY3NvIjs=', '213.xxxxxxxx', now(), now()) ------- TRX HAS BEEN WAITING 6 SEC FOR THIS LOCK TO BE GRANTED: RECORD LOCKS space id 227 page no 378 n bits 80 index `PRIMARY` of table `roundcube`.`session` trx id 2E3F77CE lock mode S locks rec but not gap waiting ------------------ ---TRANSACTION 2E3D4302, ACTIVE 2079 sec mysql tables in use 1, locked 1 94 lock struct(s), heap size 14776, 279 row lock(s), undo log entries 279 MySQL thread id 4283828, OS thread handle 0x7fdde7bfe700, query id 44714554 node1 192.168.100.1 db_dspam_admin query end UPDATE dspam_token_data SET last_hit=CURRENT_DATE(),innocent_hits=innocent_hits+1 WHERE uid=0 AND token IN ('11208966279506063560','14355575044071913407','8469385930432278733','7966374547679573945','3426741056644935886','7964984027734112185','13945758747987769275','11207568337737381816','7966374566296844217','11208965523571177400','7964979679860519113','13945759985008537803','3426745367375869886','9262020720305336524','8302736407489378233','15747196743497709503','11208965542138376392','3618985354802917582','11208959957244014792','182759523735400642','9262016372543223740','7964972414031067065', TABLE LOCK table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock mode IX RECORD LOCKS space id 17 page no 28 n bits 384 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 1757 n bits 320 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 1655 n bits 384 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 9372 n bits 376 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 2630 n bits 248 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 986 n bits 376 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 52091 n bits 384 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 1959 n bits 384 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap RECORD LOCKS space id 17 page no 51755 n bits 264 index `id_token_data_01` of table `db_dspam`.`dspam_token_data` trx id 2E3D4302 lock_mode X locks rec but not gap TOO MANY LOCKS PRINTED FOR THIS TRX: SUPPRESSING FURTHER PRINTS .. .. Thank you

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[Maria-discuss] New Question: MariaDB keeps crashing on some wordpress posts
by AskMonty KB 08 Jun '15

08 Jun '15

Hello, A new question has been asked in "MariaDB Community" by nunocarapito. Please answer it at http://mariadb.com/kb/en/mariadb-keeps-crashing-on-some-wordpress-posts/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hi there. I have a mariadb server with 2 wordpress blogs. Sometimes, when an admin posts something in it, it crashes. I've updated it, and it still happens. Not sure what else Should I do. Here's the log. http://pastebin.com/Sp6fsN4P Thanks for the help. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/mariadb-keeps-crashing-on-some-wordpress-posts/

1 0

[Maria-discuss] 2015 leap second issues?
by Marco Nicosia 06 Jun '15

06 Jun '15

Hi all, I'm writing to inquire if I should prepare any of our MariaDB/Galera users for the upcoming leap second. According to http://www.timeanddate.com/time/leapseconds.html the next leap second will be added on June 30, 2015 at 23:59:60 UTC. I searched a bit for "leap second mariadb" but didn't find anything recent. Most of our users are on MariaDB 10.0.13 and Galera 25.2.9 or subsequent. Have anyone tested both MariaDB and Galera to ensure that there are versions which are resilient to the introduction of a leap second? If so, is there documentation of versions which are known vulnerable to or proof against it? Thanks! -- Marco Nicosia Product Manager Pivotal Software, Inc.

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[Maria-discuss] New Question: Converting from MySQL to MariadB
by AskMonty KB 05 Jun '15

05 Jun '15

Hello, A new question has been asked in "MariaDB Community" by cavj1. Please answer it at http://mariadb.com/kb/en/converting-from-mysql-to-mariadb/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hi All... I'm in the process of moving from MySQL to MariadB for our web app. Within the web app we use various Crystal Reports that run on the server and present the report to the user. The report currently uses a MySQL ODBC connector. IF I modify the ODBC connector to point to the new server will the MySQL ODBC connector still work? Does anyone know if the MySQL ODBC connector is compatible with MariadB? Otherwise I'd have to modify every report in the system to use the new connector which will be very time consuming. Thank you for any input you provide. Joe -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/converting-from-mysql-to-mariadb/

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[Maria-discuss] Question about Galera "pc.recovery" feature
by Marco Nicosia 05 Jun '15

05 Jun '15

Hi all! We recently discovered the configuration wsrep_provider_options="pc.recovery=TRUE" and set about to set this configuration, as we'd like to avoid unnecessary boostrapping whenever possible. We were further surprised to discover that this feature had been enabled by default. But we were frustrated in our attempts to trigger this feature to actually observe it in action. I understand that the feature is intended to recover from full cluster crashes _such as_ a power outage, but we were unable to come up with a scenario in which we could interrupt the cluster and watch it recover automatically. This included deploying to AWS and setting all three nodes to 'stop' then 'start.' In each instance, we had to manually bootstrap. Am I misunderstanding the feature, or the conditions under which we can trigger it? -- Marco Nicosia Product Manager Pivotal Software, Inc. mnicosia(a)pivotal.io c: 650-796-2948

2 1

[Maria-discuss] MariaDB 10.1.5 now available
by Daniel Bartholomew 04 Jun '15

04 Jun '15

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.5. This is a Beta release. See the Release Notes and Changelog for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 10.1.5 - Release Notes: https://mariadb.com/kb/en/mariadb-1015-release-notes - Changelog: https://mariadb.com/kb/en/mariadb-1015-changelog - Downloads: https://downloads.mariadb.org/mariadb/10.1.5 About MariaDB 10.1: - https://mariadb.com/kb/en/what-is-mariadb-101/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ - - MariaDB Webinars - - - - - - - - - - - - - - - - - - - - - - - - - There are several upcoming MariaDB-focused webinars and many previously held ones available to watch on an on-demand basis at: - https://mariadb.com/news-events/webinars - - MariaDB Books - - - - - - - - - - - - - - - - - - - - - - - - - - There is an ever-growing library of MariaDB books available to help you get the most out of MariaDB. See the MariaDB Books page for details and links: - https://mariadb.com/kb/en/mariadb/books/ - - User Feedback plugin - - - - - - - - - - - - - - - - - - - - - - - MariaDB includes a User Feedback plugin. This plugin is disabled by default. If enabled, it submits basic, completely anonymous MariaDB usage information. This information is used by the developers to track trends in MariaDB usage to better guide development efforts. If you would like to help make MariaDB better, please add "feedback=ON" to your my.cnf or my.ini file! See http://mariadb.com/kb/en/user-feedback-plugin for more information. - - Quality - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The project always strives for quality, but in reality, nothing is perfect. Please take time to report any issues you encounter at: - http://mariadb.org/jira - - Support MariaDB - - - - - - - - - - - - - - - - - - - - - - - - - - If you would like to contribute to the MariaDB Foundation, please see the "contributing" and "donations" pages. We also have merchandise available in a cafepress store. All proceeds go to support the MariaDB Foundation. - https://mariadb.com/kb/en/contributing - https://mariadb.org/en/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledge Base - http://mariadb.com/kb

1 0

[Maria-discuss] New Question: Switch over at a database level
by AskMonty KB 04 Jun '15

04 Jun '15

Hello, A new question has been asked in "Standard Replication" by mahoarita. Please answer it at http://mariadb.com/kb/en/switch-over-at-a-database-level/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Is it possible to switch over an individual database? For example, with the below scenario: - I have 3-server replication - Server contains multiple databases owned by different users I'd like to manually switch over only one database, "MyDb1" as a failover test. The rest of the databases residing on the same MariaDB server should not be impacted. This is to minimize the impact to other databases for failover test exercise. Is this possible by Standard Replication? I'd be grateful for this information. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/switch-over-at-a-database-level/

1 0

[Maria-discuss] New Question: Autoinstall ODBC
by AskMonty KB 03 Jun '15

03 Jun '15

Hello, A new question has been asked in "MariaDB Connector/ODBC" by leopoldotaylhardat. Please answer it at http://mariadb.com/kb/en/autoinstall-odbc/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- How can I install ODBC in silent mode with command line (windows) options? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/autoinstall-odbc/

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[Maria-discuss] Unknown crash
by Irwanto 03 Jun '15

03 Jun '15

My Server :Windows 2003 R2RAM 4GMariaDB 10.0.19 01 June i'm sure i shutdown normally02 June is holiday03 June i see "crash recovery" in log file i'm sure disk is ok with chkdsk e: sometime i get this word in log file, so what caused this here my log 150601 20:17:10 [Note] InnoDB: Using mutexes to ref count buffer pool pages150601 20:17:10 [Note] InnoDB: The InnoDB memory heap is disabled150601 20:17:10 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions150601 20:17:10 [Note] InnoDB: Memory barrier is not used150601 20:17:10 [Note] InnoDB: Compressed tables use zlib 1.2.3150601 20:17:10 [Note] InnoDB: Not using CPU crc32 instructions150601 20:17:10 [Note] InnoDB: Initializing buffer pool, size = 1008.0M150601 20:17:10 [Note] InnoDB: Completed initialization of buffer pool150601 20:17:10 [Note] InnoDB: Highest supported file format is Barracuda.150601 20:17:10 [Note] InnoDB: 128 rollback segment(s) are active.150601 20:17:10 [Note] InnoDB: Waiting for purge to start150601 20:17:10 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.23-72.1 started; log sequence number 10406975924150601 20:17:11 [Note] Server socket created on IP: '0.0.0.0'.150601 20:17:11 [Warning] 'proxies_priv' entry '@% root@kutu' ignored in --skip-name-resolve mode.150601 20:17:11 [Note] Event Scheduler: Loaded 0 events150601 20:17:11 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: ready for connections.Version: '10.0.19-MariaDB-log' socket: '' port: 3309 mariadb.org binary distribution150601 20:22:11 [Note] feedback plugin: report to 'https://mariadb.org/feedback_plugin/post' was sent150601 20:22:14 [Note] feedback plugin: server replied 'ok'150601 20:33:39 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: Normal shutdown 150601 20:33:39 [Note] Event Scheduler: Purging the queue. 0 events150601 20:34:02 [ERROR] feedback plugin: ssl failed for url 'https://mariadb.org/feedback_plugin/post' CryptGenRandom error150601 20:34:02 [Note] InnoDB: FTS optimize thread exiting.150601 20:34:02 [Note] InnoDB: Starting shutdown...150603 7:12:49 [Note] InnoDB: Using mutexes to ref count buffer pool pages150603 7:12:49 [Note] InnoDB: The InnoDB memory heap is disabled150603 7:12:49 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions150603 7:12:49 [Note] InnoDB: Memory barrier is not used150603 7:12:49 [Note] InnoDB: Compressed tables use zlib 1.2.3150603 7:12:50 [Note] InnoDB: Not using CPU crc32 instructions150603 7:12:50 [Note] InnoDB: Initializing buffer pool, size = 1008.0M150603 7:12:50 [Note] InnoDB: Completed initialization of buffer pool150603 7:12:50 [Note] InnoDB: Highest supported file format is Barracuda.150603 7:12:50 [Note] InnoDB: The log sequence numbers 10406975924 and 10406975924 in ibdata files do not match the log sequence number 10407001762 in the ib_logfiles!150603 7:12:50 [Note] InnoDB: Database was not shutdown normally!150603 7:12:50 [Note] InnoDB: Starting crash recovery.150603 7:12:50 [Note] InnoDB: Reading tablespace information from the .ibd files...150603 7:13:01 [Note] InnoDB: Restoring possible half-written data pages 150603 7:13:01 [Note] InnoDB: from the doublewrite buffer...InnoDB: Last MySQL binlog file position 0 11515, file name E:\smart\smart_database_mariadb.10\repl\KMS-PLB-bin.000001150603 7:13:02 [Note] InnoDB: 128 rollback segment(s) are active.150603 7:13:02 [Note] InnoDB: Waiting for purge to start150603 7:13:02 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.23-72.1 started; log sequence number 10407001762150603 7:13:03 [Note] Server socket created on IP: '0.0.0.0'.150603 7:13:03 [Warning] 'proxies_priv' entry '@% root@kutu' ignored in --skip-name-resolve mode.150603 7:13:03 [Note] Event Scheduler: Loaded 0 events150603 7:13:03 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: ready for connections.Version: '10.0.19-MariaDB-log' socket: '' port: 3309 mariadb.org binary distribution150603 7:18:03 [Note] feedback plugin: report to 'https://mariadb.org/feedback_plugin/post' was sent150603 7:18:04 [Note] feedback plugin: server replied 'ok'

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[Maria-discuss] security scans: 5.5.5-10.0.19 should be 5.5.43-10.0.19
by Reindl Harald 01 Jun '15

01 Jun '15

[harry@rh:~]$ telnet localhost 3306 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. ] 5.5.5-10.0.19-MariaDB the 5.5.5 srting leads in false positives for security scans and while i reported that to OpenVAS the correct soultion would be updating the 5.5.5 string to the latest 5.5x release instead "Fix" each scanner out there Medium (CVSS: 4.0) NVT: MariaDB 'COM_CHANGE_USER' Command Insecure Salt Generation Security Bypass Vuln... (OID: 1.3.6.1.4.1.25623.1.0.804037) Solution Upgrade to MariaDB version 5.2.14, 5.3.12, 5.5.29 or later, For updates refer to https://mariadb.org Medium (CVSS: 5.0) NVT: MariaDB Denial Of Service Vulnerability (Windows) (OID: 1.3.6.1.4.1.25623.1.0.804035) Solution Upgrade to MariaDB 5.1.68, 5.2.15, 5.3.13, 5.5.30 or later, For updates refer to https://mariadb.org Product detection result: cpe:/a:mariadb:mariadb:5.5.5- by MySQL/MariaDB Detection (OID: 1.3.6.1.4.1.25623.1.0.100152)

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Re: [Maria-discuss] Dynamic Columns ORM
by Tom Worster 23 May '15

23 May '15

Hi Daniel, Yes, I shall add remarks about indexes to the docs. I didn't have any purpose for "token" other than I needed a name for the strings that go in the SQL that refer to dynamic columns. Is there a problem with that particular word or do you think it would be better to do without any such name? You're spot on about computed columns. From my point of view, doing that amounts to adding the column to the schema. The column name appears in DDL and the corresponding attribute is therefore no longer ad hoc in the the application. The same point applies (in some imaginary future) to adding an index to a dynamic column without needing a computed column. If attributes represented in the application are to be truly fluid then their corresponding dynamic column cannot be indexed, at least not as I understand indexes in MySQL. Thanks for taking a look. Tom From: Daniel Black <daniel.black(a)openquery.com.au> Date: Saturday, May 23, 2015 at 1:27 AM To: Tom Worster <fsb(a)thefsb.org>, maria-discuss email list <maria-discuss(a)lists.launchpad.net> Subject: Re: [Maria-discuss] Dynamic Columns ORM They are generally good for blob like information that is generally retrieved in a query with some structure around name->value pairs. You mentioned (forum) that there isn't an index on these items so you'll get more row scanning on these if people search on a Dynamic attribute tokens (not sure why you are adding "token" to the language here). This limitation to be mentioned more in the documentation you've written. You could use computed columns to extract a variable to index if really needed but you'll need to ask why isn't it a column in its own right. https://mariadb.com/kb/en/mariadb/virtual-computed-columns/ Enhancing frameworks to expose database features is a good thing as they often get omitted in the reduction to the lowest common factor (mysql-5.0?) and sometimes the lowest common factor across db implementations (ansi SQL(?)). -- -- Daniel Black, Engineer @ Open Query (http://openquery.com.au) Remote expertise & maintenance for MySQL/MariaDB server environments.

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[Maria-discuss] Dynamic Columns ORM
by Tom Worster 23 May '15

23 May '15

In January I was asking about Dynamic Columns because I had started working on an ORM extension for it. It is now tagged 0.1.0 in Github. There probably aren't many here using Yii Framework but at least this shows that some of us like and use Maria's Dynamic Columns. Thank you, Maria. I already got some feedback on IRC from Kolbe who hated it :'( and we'd welcome more of the same :-) https://github.com/tom--/dynamic-ar Yii Framework forum thread: http://www.yiiframework.com/forum/index.php/topic/63995-/ Previous thread started here: https://lists.launchpad.net/maria-discuss/msg02159.html tom[] The empty array without a dollar sign

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[Maria-discuss] mysqldump Spider tables
by Nicolas Payart 21 May '15

21 May '15

Hi list, I am using Spider Storage Engine for multiple purpose. I often create spider tables as a drop-in replacement for Federated(x) tables. But one main difference I notice using spider SE vs Federated is that mysqldump dumps the whole data of remote spider tables whereas it only dumps the table schema of federated tables. I expected these two close storage engines to behave similarly... Is this an expected behaviour of Spider SE (and/or mysqldump)? Is there a workaround to make mysqldump dump only schema of Spider tables, just like it would do with a federated table? Of course, I can use the --no-data option but it's a bit annoying when you have a mix of innodb tables and spider tables in the same database. Thanks, -- Nicolas

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[Maria-discuss] Query Cache with TTL and unconsistent values - remove memcache servers
by Roberto Spadim 20 May '15

20 May '15

Hi guys! I created a MDEV (feature request) sometime ago, https://mariadb.atlassian.net/browse/MDEV-6777 There's a patch ( http://ebergen.net/wordpress/2007/04/23/select-sql_cache_ttl/) but i want change a bit to work "better", it's using "SELECT SQL_CACHE_TTL ..." hint, and could be better change it to "SELECT SQL_CACHE_TTL=9999 ..." to easily change TTL instead of a fixed TTL set by "SET ttl=999;SELECT SQL_CACHE_TTL ..." query, could anyone help me with it? Why? With this we can reduce the memcache use in small/medium systems, reducing app side caching code too the difference between query cache and query cache with ttl is how it's removed from cache, one is removed with table invalidation (consistent cache), and other is removed with time to live even if table change (unconsistent cache) =] help is welcome, thnks guys -- Roberto Spadim

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[Maria-discuss] MariaDB 10.1.4 Progress output
by Rhys Campbell 18 May '15

18 May '15

Note the progress output below. I've seen several like this. i.e... Stage: 1 of 72 'altering table' 350% of stage done. Is this intentional? [cid:image001.png@01D07B7A.526BD6D0] Rhys Campbell Database Administrator TradingScreen, Inc. 23 York House, 5th Floor London WC2B 6UJ Email: rhys.campbell(a)tradingscreen.com<mailto:rhys.campbell@tradingscreen.com> Follow TradingScreen on Twitter<http://twitter.com/#!/TradingScreen> , Facebook<http://www.facebook.com/pages/TradingScreen/214046251945650> and our blog Trading Smarter<tradingsmarter.tradingscreen.com> This message is intended only for the recipient(s) named above and may contain confidential information. If you are not an intended recipient, you should not review, distribute or copy this message. Please notify the sender immediately by e-mail if you have received this message in error and delete it from your system.

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[Maria-discuss] MariaDB Galera Cluster 10.0.19 and 5.5.43 now available
by Daniel Bartholomew 18 May '15

18 May '15

The MariaDB project is pleased to announce the immediate availability of MariaDB Galera Cluster 5.5.43 and 10.0.19. These are Stable (GA) releases. See the Release Notes and Changelogs for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB Galera Cluster 10.0.19 - Release Notes: https://mariadb.com/kb/en/mariadb-galera-cluster-10019-release-notes/ - Changelog: https://mariadb.com/kb/en/mariadb-galera-cluster-10019-changelog/ - Downloads: https://downloads.mariadb.org/mariadb-galera/10.0.19/ MariaDB Galera Cluster 5.5.43 - Release Notes: https://mariadb.com/kb/en/mariadb-galera-cluster-5543-release-notes/ - Changelog: https://mariadb.com/kb/en/mariadb-galera-cluster-5543-changelog/ - Downloads: https://downloads.mariadb.org/mariadb-galera/5.5.43/ About MariaDB Galera Cluster: - https://mariadb.com/kb/en/what-is-mariadb-galera-cluster/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ - - MariaDB Webinars - - - - - - - - - - - - - - - - - - - - - - - - - There are several upcoming MariaDB-focused webinars and many previously held ones available to watch on an on-demand basis at: - https://mariadb.com/news-events/webinars - - MariaDB Books - - - - - - - - - - - - - - - - - - - - - - - - - - There is an ever-growing library of MariaDB books available to help you get the most out of MariaDB. See the MariaDB Books page for details and links: - https://mariadb.com/kb/en/mariadb/books/ - - User Feedback plugin - - - - - - - - - - - - - - - - - - - - - - - MariaDB includes a User Feedback plugin. This plugin is disabled by default. If enabled, it submits basic, completely anonymous MariaDB usage information. This information is used by the developers to track trends in MariaDB usage to better guide development efforts. If you would like to help make MariaDB better, please add "feedback=ON" to your my.cnf or my.ini file! See http://mariadb.com/kb/en/user-feedback-plugin for more information. - - Quality - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The project always strives for quality, but in reality, nothing is perfect. Please take time to report any issues you encounter at: - http://mariadb.org/jira - - Support MariaDB - - - - - - - - - - - - - - - - - - - - - - - - - - If you would like to contribute to the MariaDB Foundation, please see the "contributing" and "donations" pages. We also have merchandise available in a cafepress store. All proceeds go to support the MariaDB Foundation. - https://mariadb.com/kb/en/contributing - https://mariadb.org/en/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledge Base - http://mariadb.com/kb

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[Maria-discuss] query cache dump_at_shutdown/load_at_startup useful + no character set/collation?
by Daniel Black 17 May '15

17 May '15

I was testing out using the query_cache_info plugin (https://mariadb.com/kb/en/mariadb/query_cache_info-plugin/) to pre-cache data into a server after an upgrade. The read only slaves have a fairly high cache hit ratio. select concat('use ', STATEMENT_SCHEMA, ';', STATEMENT_TEXT, ';') as q INTO OUTFILE '/tmp/qc.txt' FIELDS ESCAPED BY '' TERMINATED BY '' from information_schema.QUERY_CACHE_INFO; Query OK, 7122 rows affected (0.03 sec) When loading these it seems the statements have a collation however this isn't stored in the query cache. $ mysql --force < /tmp/qc.txt > /dev/null ERROR 1267 (HY000) at line 119: Illegal mix of collations (latin1_bin,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' ERROR 1267 (HY000) at line 2390: Illegal mix of collations (latin1_bin,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' ERROR 1267 (HY000) at line 7569: Illegal mix of collations (latin1_bin,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' Attempts to force this with --default-character-set={utf8|utf8mb4} also resulted in the same error or same with (echo "set character_set_connection=utf8;"; cat /tmp/qc.txt; ) | time mysql --force.. Are query cache results actually predictable if they have the same statement running in a different session character set/collation? Anyone see a work around to get the restore file usable on all queries? Is asking for query cache dump/load as a feature request (similar to innodb_buffer_pool_dump_at_shutdown/innodb_buffer_pool_restore_at_startup) going to be useful to anyone? -- -- Daniel Black, Engineer @ Open Query (http://openquery.com.au) Remote expertise & maintenance for MySQL/MariaDB server environments.

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[Maria-discuss] performance_schema
by Rhys Campbell 15 May '15

15 May '15

Hi All, Does anyone know if the performance_schema guarantees that every statement executed will appear in the events_statement_summary_by_digest table (excluding those that could be pushed out due to size restrictions). Or is it a "best effort" system? If it's a best effort system what are the circumstances in which a query may not make it to the performance schema? Rhys Campbell Database Administrator TradingScreen, Inc. 23 York House, 5th Floor London WC2B 6UJ Email: rhys.campbell(a)tradingscreen.com<mailto:rhys.campbell@tradingscreen.com> Follow TradingScreen on Twitter<http://twitter.com/#!/TradingScreen> , Facebook<http://www.facebook.com/pages/TradingScreen/214046251945650> and our blog Trading Smarter<tradingsmarter.tradingscreen.com> This message is intended only for the recipient(s) named above and may contain confidential information. If you are not an intended recipient, you should not review, distribute or copy this message. Please notify the sender immediately by e-mail if you have received this message in error and delete it from your system.

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