March 2016 - discuss - lists.mariadb.org

[Maria-discuss] Partitionning question
by Ghazi Btissam 14 Mar '16

14 Mar '16

Hi, 1- Could a partitioned table contain, or be referenced by, foreign keys? 2- As I saw in MariaDb documentation ,the subpartitions may use either HASH or KEY partitioning. Does the LIST subpartitioning exists in MariaDb? Can we use : a composite partitionning : RANGE/LIST? Thanks

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[Maria-discuss] New Question: How do I install the ODBC connector/driver on Linux Mint 17.3
by AskMonty KB 13 Mar '16

13 Mar '16

Hello, A new question has been asked in "MariaDB Connector/ODBC" by Redman Companies. Please answer it at http://mariadb.com/kb/en/how-do-i-install-the-odbc-connectordriver-on-linux… as the person asking the question may not be subscribed to the mailing list. -------------------------------- I can not find the installation procedure for the gzip or source packages anywhere. (1.0.5 or 2.0.9) Thanks in advance. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/how-do-i-install-the-odbc-connectordriver-on-linux…

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[Maria-discuss] AUTO_INCREMENT and partitioning
by Ghazi Btissam 12 Mar '16

12 Mar '16

Hi, 1- I have a table with a unique key which is calculated by the AUTO_INCREMENT feature, and I need to range partition it using a date field , is it possible and/or how to do it? 2- Is there a way to implement sequences for the primary key (like it exists in Oracle) or the AUTO_INCREMENT is the only one in MariaDb? For example: CREATE TABLE new ( id INT NOT NULL AUTO_INCREMENT, name VARCHAR(50), added DATE, PRIMARY KEY (id), ) PARTITION BY RANGE( TO_DAYS(added) ) ( PARTITION p0 VALUES LESS THAN (1990), PARTITION p1 VALUES LESS THAN (2000), PARTITION p2 VALUES LESS THAN MAXVALUE ) ; Thanks

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[Maria-discuss] Read/Write file
by Ghazi Btissam 12 Mar '16

12 Mar '16

Hi, How to read/write a text file from a MariaDb routine ? Is this possible only via tables (loading via Load data infile or using connect engine..)? Thanks

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[Maria-discuss] MariaDB CONNECT Storage Engine access to Oracle 11GR2
by Ghazi Btissam 12 Mar '16

12 Mar '16

Hi, I saw an article about the equivalent of the Oracle DbLink feature in MariaDb, I found that the connect engine with the ODBC table type can do an insert+select on an Oracle remote table ,but the update of the remote data is it possible? Thanks

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[Maria-discuss] New Question: mariadb 10.1.12 mysql_install_db aborts on unkown file 'test'
by AskMonty KB 11 Mar '16

11 Mar '16

Hello, A new question has been asked in "News and Information" by stuart_zurcher_g. Please answer it at http://mariadb.com/kb/en/mariadb-10112-mysql_install_db-aborts-on-unkown-fi… as the person asking the question may not be subscribed to the mailing list. -------------------------------- using Docker container with -v /data:/var/lib/mysql \\ xtrabackup-v2 (2.4) 999:docker /data \\ chown mysql:mysql /var/lib/mysql\\ Initializing\\ {{{ 2016-03-11 13:59:18 139887411787712 [Note] /usr/sbin/mysqld (mysqld 10.1.12-MariaDB-1~jessie) starting as process 54 ... 2016-03-11 13:59:18 139887411787712 [Note] WSREP: Read nil XID from storage engines, skipping position init 2016-03-11 13:59:18 139887411787712 [Note] WSREP: wsrep_load(): loading provider library 'none' 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Using mutexes to ref count buffer pool pages 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: The InnoDB memory heap is disabled 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Memory barrier is not used 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Compressed tables use zlib 1.2.8 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Using Linux native AIO 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Using SSE crc32 instructions 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Initializing buffer pool, size = 400.0M 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Completed initialization of buffer pool 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created! 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB 2016-03-11 13:59:18 139887411787712 [Note] InnoDB: Database physically writes the file full: wait... 2016-03-11 13:59:19 139887411787712 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB 2016-03-11 13:59:25 139887411787712 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0 2016-03-11 13:59:27 139887411787712 [Warning] InnoDB: New log files created, LSN=45883 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Doublewrite buffer not found: creating new 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Doublewrite buffer created 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: 128 rollback segment(s) are active. 2016-03-11 13:59:27 139887411787712 [Warning] InnoDB: Creating foreign key constraint system tables. 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Foreign key constraint system tables created 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Creating tablespace and datafile system tables. 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Tablespace and datafile system tables created. 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Waiting for purge to start 2016-03-11 13:59:27 139887411787712 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.28-76.1 started; log sequence number 0 2016-03-11 13:59:27 139886535374592 [Note] InnoDB: Dumping buffer pool(s) not yet started 2016-03-11 13:59:27 139887411550976 [Warning] Failed to load slave replication state from table mysql.gtid_slave_pos: 1146: Table 'mysql.gtid_slave_pos' doesn't exist 2016-03-11 13:59:31 139640839899072 [Note] /usr/sbin/mysqld (mysqld 10.1.12-MariaDB-1~jessie) starting as process 83 ... 2016-03-11 13:59:31 139640839899072 [Note] WSREP: Read nil XID from storage engines, skipping position init 2016-03-11 13:59:31 139640839899072 [Note] WSREP: wsrep_load(): loading provider library 'none' 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Using mutexes to ref count buffer pool pages 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: The InnoDB memory heap is disabled 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Memory barrier is not used 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Compressed tables use zlib 1.2.8 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Using Linux native AIO 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Using SSE crc32 instructions 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Initializing buffer pool, size = 400.0M 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Completed initialization of buffer pool 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Highest supported file format is Barracuda. 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: 128 rollback segment(s) are active. 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Waiting for purge to start 2016-03-11 13:59:31 139640839899072 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.28-76.1 started; log sequence number 1616799 2016-03-11 13:59:31 139639968990976 [Note] InnoDB: Dumping buffer pool(s) not yet started 2016-03-11 13:59:34 140650620151744 [Note] /usr/sbin/mysqld (mysqld 10.1.12-MariaDB-1~jessie) starting as process 113 ... 2016-03-11 13:59:34 140650620151744 [Note] WSREP: Read nil XID from storage engines, skipping position init 2016-03-11 13:59:34 140650620151744 [Note] WSREP: wsrep_load(): loading provider library 'none' 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Using mutexes to ref count buffer pool pages 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: The InnoDB memory heap is disabled 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Memory barrier is not used 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Compressed tables use zlib 1.2.8 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Using Linux native AIO 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Using SSE crc32 instructions 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Initializing buffer pool, size = 400.0M 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Completed initialization of buffer pool 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Highest supported file format is Barracuda. 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: 128 rollback segment(s) are active. 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Waiting for purge to start 2016-03-11 13:59:35 140650620151744 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.28-76.1 started; log sequence number 1616809 2016-03-11 13:59:35 140649751873280 [Note] InnoDB: Dumping buffer pool(s) not yet started ERROR: 1049 Unknown database 'test' 2016-03-11 13:59:35 140650620151744 [ERROR] Aborting }}} \\ **my.cnf** {{{ mysqld] # # * Basic Settings # skip-host-cache skip-name-resolve bind-address = 0.0.0.0 port = 3306 # basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp socket =/var/run/mysqld/mysqld.sock user = mysql lc_messages_dir = /usr/share/mysql lc_messages = en_US skip-external-locking # # * Fine Tuning # max_connections = 100 connect_timeout = 5 wait_timeout = 600 max_allowed_packet = 16M thread_cache_size = 128 sort_buffer_size = 4M bulk_insert_buffer_size = 16M tmp_table_size = 32M max_heap_table_size = 32M # # * MyISAM # # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched. On error, make copy and try a repair. myisam_recover_options = BACKUP key_buffer_size = 128M #open-files-limit = 2000 table_open_cache = 400 myisam_sort_buffer_size = 512M concurrent_insert = 2 read_buffer_size = 2M read_rnd_buffer_size = 1M # Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf. # # we do want to know about network errors and such log-error =/dev/stderr log_warnings = 3 # # Enable the slow query log to see queries with especially long duration #slow_query_log[={0|1}] slow_query_log_file = /var/log/mysql/mariadb-slow.log long_query_time = 10 expire_logs_days = 10 max_binlog_size = 100M # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! default_storage_engine = InnoDB innodb_log_file_size = 48M innodb_log_buffer_size = 8M innodb_file_per_table = 1 innodb_buffer_pool_size = 400M innodb_open_files = 400 innodb_io_capacity = 400 innodb_flush_method = O_DIRECT innodb-doublewrite =1 innodb-autoinc-lock-mode=2 innodb-flush-log-at-trx-commit=0 innodb_data_file_path =ibdata1:12M:autoextend log-bin =ON binlog-format =ROW wsrep-provider =/usr/lib/galera/libgalera_smm.so wsrep-sst-method =xtrabackup-v2 wsrep_on =ON query-cache-size=0 query_cache_type=0 read_buffer_size=1G # following to be changed by docker-entrypoint.sh before mysql_install_db wsrep-node-address= wsrep-node-name= wsrep-cluster-name= wsrep-cluster-address= wsrep-sst-auth= wsrep-sst-donor= # xtrabackup Configuration [sst] progress=1 compressor="gzip" decompressor="gzip -dc" rebuild=ON compact=ON encrypt =0 }}} \\ mysql_install_db --user=mysql --datadir="$DATADIR" --rpm -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/mariadb-10112-mysql_install_db-aborts-on-unkown-fi…

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[Maria-discuss] MariaDB replication-manager 0.6.0 release
by Guillaume Lefranc 11 Mar '16

11 Mar '16

Hi, I just released the latest version of my replication manager utility for MariaDB. It has some tremendous improvements over the last version, so if you are using it please upgrade, or check it out at https://github.com/mariadb-corporation/replication-manager Main features: - Agentless utility - Works over standard mysql protocol - Easy to deploy: single binary for all 64-bit systems - Failover - Switchover - Pre and post scripts - Seamless interaction with Maxscale, HAProxy, ProxySQL... - Interactive and non-interactive modes - Designed to work with MariaDB GTID Not supported yet by this version, but might be in the future: - Clustering - Conf file - Semi sync support - Multi-master support - Positional replication - Multiple GTID domains Regards, Guillaume

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[Maria-discuss] New Question: Will MariaDB add json components like MySQL recently announced
by AskMonty KB 11 Mar '16

11 Mar '16

Hello, A new question has been asked in "What is in the Different MariaDB Releases?" by patb(a)mindkicks.com. Please answer it at http://mariadb.com/kb/en/will-mariadb-add-json-components-like-mysql-recent… as the person asking the question may not be subscribed to the mailing list. -------------------------------- MySQL has released components specifically for json. As a web developer I need to know if MariaDB will also add features for json? -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/will-mariadb-add-json-components-like-mysql-recent…

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[Maria-discuss] The insert performance issue
by 林澤宇 11 Mar '16

11 Mar '16

Hi ALL , I test the MariaDB performance of insert command . I use a file include 100000 insert command statements to test the insert performanc . On local server ,the Mariadb spent about 20 second to insert data;but on remote server ,the MariaDB spent about 30 second to insert data . I execute the command " mysql -h db1 -utest -ptest -D IST < insert_file.sql" on local and remote servers . Why the MariaDB has about 10 second gap ? Maybe the network should to cause some latancy ,but the time should not have so long . What issue to cause the gap ?

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Re: [Maria-discuss] The insert performance issue
by Federico Razzoli 11 Mar '16

11 Mar '16

That could be a problem if DNS is not reliable, but I never heard of a 10 seconds DNS request. I'd strongly recommend to assign more memory to the buffer pool. If InnoDB is the main storage engine you use, 1.5G should be ok. Swap is evil for a database, so you should make sure that loading a dump does not cause swapping. Federico -------------------------------------------- Gio 10/3/16, Jerry Lin <jerry08291021(a)gmail.com> ha scritto: Oggetto: Re: [Maria-discuss] The insert performance issue A: "Sergei Golubchik" <serg(a)mariadb.org> Cc: maria-discuss(a)lists.launchpad.net Data: Giovedì 10 marzo 2016, 11:20 Hi ,My MariaDB original setting has include "skip-name-resolve" . 2016-03-10 16:48 GMT+08:00 Sergei Golubchik <serg(a)mariadb.org>: Hi, 林澤宇! On Mar 10, 林澤宇 wrote: > Hi ALL , > > I test the MariaDB performance of insert command . > I use a file include 100000 insert command statements to test the insert > performanc . > On local server ,the Mariadb spent about 20 second to insert data;but on > remote server ,the MariaDB spent about 30 second to insert data . > I execute the command " mysql -h db1 -utest -ptest -D IST < > insert_file.sql" on local and remote servers . > > Why the MariaDB has about 10 second gap ? > Maybe the network should to cause some latancy ,but the time should not > have so long . > > What issue to cause the gap ? May be hostname resolution? As far as I understand the default resolver timeout is 5 seconds (man resolv.conf) - two failed name lookups gives you exactly 10 seconds. Try --skip-name-resolve on the remote mariadb server and make sure you only use IP adresses when granting privileges and when connecting to the server. Regards, Sergei Chief Architect MariaDB and security(a)mariadb.org -----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

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