- discuss - lists.mariadb.org

[Maria-discuss] Maxscale: qlafilter
by Atif Ghaffar 06 Jun '17

06 Jun '17

Hi all, I have setup a maxscale instance to proxy to the local mysql server running on a different port. All this is working fine. I have also setup a filter to catch deletes on a single table. I can see the deletes in the filter but only when I restart maxscale service. Is there something that I can set so that the log is flushed immediately to the flle. The filter definition is the following [WaCountriesDomainsDeleteFilter] type=filter module=qlafilter options=ignorecase,extended filebase=/tmp/maxscale.wa_countries_domains.delete match=DELETE.*wa_countries_domains.* log_type=unified append=true kind regards -- Atif Ghaffar

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[Maria-discuss] MyRocks:recommended configuration for DB of several TB ?
by Julien Muchembled 01 Jun '17

01 Jun '17

Hello, We have started to evaluate MyRocks 3 months ago, our DBs were initially empty and now they have reached 500 GB on-disk. We experience severe performance issues, and we have the feelings it could be better. https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide is interesting, especially the "Universal Compaction" section: « Universal compaction has a size limitation. Please be careful when your DB (or column family) size is over 100GB. » I don't think that write amplification is a bottleneck for our application, so my obvious first question is: What compaction style is used in MariaDB and how to make sure that Level Style Compaction is used ? Also, we haven't set any 'rocksdb_*' option. The default configuration may not be appropriate in our case. For example, rocksdb_block_cache_size (default: 512MB) seems to be one of the most important options, similarly to innodb_buffer_pool_size and tokudb_cache_size, although I have never understood why (see my unanswered question at https://lists.launchpad.net/maria-discuss/msg02683.html ). Although the DB is much bigger than RAM (128 GB), RAM should be big enough to contain the active working set. Julien

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[Maria-discuss] MariaDB 10.1.24 and Connector/C 2.3.3 now available
by Daniel Bartholomew 31 May '17

31 May '17

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.24 and MariaDB Connector/C 2.3.3. See the Release Notes and Changelogs for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 10.1.24 - Release Notes: https://mariadb.com/kb/en/mdb-10124-rn/ - Changelog: https://mariadb.com/kb/en/mdb-10124-cl/ - Downloads: https://downloads.mariadb.org/mariadb/10.1.24 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 Connector/C 2.3.3 - Release Notes: https://mariadb.com/kb/en/mcc-233-rn/ - Changelog: https://mariadb.com/kb/en/mcc-233-cl/ - Downloads: https://downloads.mariadb.org/connector-c/2.3.3/ About MariaDB Connector/ODBC: - https://mariadb.com/kb/en/about-mariadb-connector-c/ - - 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/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadbfdn - 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] Ubuntu 16.04, Accidentally installed mariadb-server on top of mysql-server
by rich.greder＠hushmail.com 29 May '17

29 May '17

Hello, Guys, I did a bad one. I only had one server remaining that still had mysql installed and thinking I was logged into my laptop's console, I executed apt-get install mariadb-server. I wasn't on my laptop. I was logged into a virtual hosting server and knocked eight sites offline including my wiki of all my HOWTO documents ironically, describing how to install mariadb-server on various platforms. I didn't notice anything was amiss until I saw a comment that it was uninstalling mysql (which I knew wasn't on my laptop) I was able to log in using my old root password, but all my databases were gone. Is there any hope for recovering the databases as they were earlier today? Rich

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[Maria-discuss] thank you for getting MyRocks into MariaDB 10.2
by MARK CALLAGHAN 26 May '17

26 May '17

I look forward to trying it out. -- Mark Callaghan mdcallag(a)gmail.com

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[Maria-discuss] MariaDB 10.2.6 Delay slave question?
by Ljr Yang 24 May '17

24 May '17

HI, Today, we upgrade a group MariaDB 10.1.22 to MariaDB 10.2.6, after upgade, start delay slave : change master to master_delay=86400 start slave and execute show all slaves status , Seconds_Behind_Master continue grow and Exec_Master_Log_Pos not change, please help confirm what cause lead this ? thanks. Slave_IO_Running: Yes Slave_SQL_Running: Yes * Exec_Master_Log_Pos: 367* Seconds_Behind_Master: 116072 Gtid_IO_Pos: 0-227-72846307321 Parallel_Mode: conservative SQL_Delay: 86400 SQL_Remaining_Delay: 83164 Slave_SQL_Running_State: Waiting until MASTER_DELAY seconds after master executed event after 5 minutes, Slave_IO_Running: Yes Slave_SQL_Running: Yes * Exec_Master_Log_Pos: 367* Seconds_Behind_Master: 116550 Gtid_IO_Pos: 0-227-72846546131 Parallel_Mode: conservative SQL_Delay: 86400 SQL_Remaining_Delay: 82686 Slave_SQL_Running_State: Waiting until MASTER_DELAY seconds after master executed event

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[Maria-discuss] MariaDB 10.2.6 Stable (GA) now available
by Daniel Bartholomew 23 May '17

23 May '17

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.2.6 Stable (GA). This is the first stable release in the MariaDB 10.2 series. MariaDB 10.0.31 and MariaDB Connector/ODBC 2.0.15 have also been released. See the Release Notes and Changelogs for details. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB 10.2.6 - Release Notes: https://mariadb.com/kb/en/mdb-1026-rn/ - Changelog: https://mariadb.com/kb/en/mdb-1026-cl/ - Downloads: https://downloads.mariadb.org/mariadb/10.2.6 About MariaDB 10.2: - https://mariadb.com/kb/en/what-is-mariadb-102/ APT and YUM Repository Configuration Generator: - https://downloads.mariadb.org/mariadb/repositories/ MariaDB 10.0.31 - Release Notes: https://mariadb.com/kb/en/mdb-10031-rn/ - Changelog: https://mariadb.com/kb/en/mdb-10031-cl/ - Downloads: https://downloads.mariadb.org/mariadb/10.0.31 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 Connector/ODBC 2.0.15 - Release Notes: https://mariadb.com/kb/en/mco-2015-rn/ - Changelog: https://mariadb.com/kb/en/mco-2015-cl/ - Downloads: https://downloads.mariadb.org/connector-odbc/2.0.15/ About MariaDB Connector/ODBC: - https://mariadb.com/kb/en/about-mariadb-connector-odbc/ - - 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/donate/ We hope you enjoy MariaDB! -- MariaDB Website - http://mariadb.org Twitter - http://twitter.com/mariadbfdn - 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] Connector Net Question
by ksubramanian＠paycommerce.com 17 May '17

17 May '17

All, We have set auto-commit=false at server level. But our .Net developers want to enable this auto-commit as true (default behaviour) that I hesitant to do that. Is there any connector (driver) properties that we can set at connection level for auto-commit. I know in JDBC driver, we have the properties that we can set at driver level when we establish connection to DB. But for connector/Net I am trying to find, couldn’t locate one. I noticed auto-enlist sett to true or false, not sure whether this will mimic the auto-commit functionality in a given connection. Can anyone using .Net and MariaDB combination help me to share your thought on this. Regards, Karthick Sent from Mail for Windows 10

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Re: [Maria-discuss] Connector Net Question
by Federico Razzoli 17 May '17

17 May '17

Note that the auto commit was always enabled by default in MySQL. So, changing this default would probably break most existing applications. Running a multi-statement transaction in autocommit is possible by using START TRANSACTION explicitly. Applications can do this and just don't care about autocommit value, if they want. Cheers, Federico -------------------------------------------- Mer 17/5/17, <ksubramanian(a)paycommerce.com> ha scritto: Oggetto: Re: [Maria-discuss] Connector Net Question A: "Vladislav Vaintroub" <vvaintroub(a)gmail.com>, "Maria Discuss" <maria-discuss(a)lists.launchpad.net> Data: Mercoledì 17 maggio 2017, 16:36 #yiv0052539947 #yiv0052539947 -- _filtered #yiv0052539947 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv0052539947 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} #yiv0052539947 #yiv0052539947 p.yiv0052539947MsoNormal, #yiv0052539947 li.yiv0052539947MsoNormal, #yiv0052539947 div.yiv0052539947MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:11.0pt;color:windowtext;} #yiv0052539947 a:link, #yiv0052539947 span.yiv0052539947MsoHyperlink {color:blue;text-decoration:underline;} #yiv0052539947 a:visited, #yiv0052539947 span.yiv0052539947MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;} #yiv0052539947 pre {margin:0cm;margin-bottom:.0001pt;font-size:10.0pt;color:black;} #yiv0052539947 span.yiv0052539947HTMLPreformattedChar {color:black;} #yiv0052539947 .yiv0052539947MsoChpDefault {} _filtered #yiv0052539947 {margin:72.0pt 72.0pt 72.0pt 72.0pt;} #yiv0052539947 div.yiv0052539947WordSection1 {} #yiv0052539947 The reason for disable the auto-commit is to mimic more or less similar to oracle behaviour. Because our existing system was in oracle. Just asking out of curiosity – why we enable auto-commit by default in Maria DB. I felt that it wont give control on how we maintain the transaction. Can anyone provide some reasons for why we need to keep the auto-commit enabled at server level. Sent from Mail for Windows 10 From: Vladislav Vaintroub Sent: 17 May 2017 18:08 To: ksubramanian(a)paycommerce.com; Maria Discuss Subject: Re: [Maria-discuss] Connector Net Question On 17.05.2017 11:26, ksubramanian(a)paycommerce.com wrote:All, We have set auto-commit=false at server level. But our .Net developers want to enable this auto-commit as true (default behaviour) that I hesitant to do that. Is there any connector (driver) properties that we can set at connection level for auto-commit. I know in JDBC driver, we have the properties that we can set at driver level when we establish connection to DB. But for connector/Net I am trying to find, couldn’t locate one. I noticed auto-enlist sett to true or false, not sure whether this will mimic the auto-commit functionality in a given connection. Can anyone using .Net and MariaDB combination help me to share your thought on this. Out of curiosity, what is the reason for you to use the non-default behavior (global auto-commit=false)? As far as I know, you cannot set arbitrary session variable automatically with C/NET, and there is no property for autocommit. Thus this would need to be done in code, just after connecting, e.g command.executeNonQuery("set @@autocommit=1") Regards,Karthick Sent from Mail for Windows 10 _______________________________________________Mailing list: https://launchpad.net/~maria-discussPost to : maria-discuss(a)lists.launchpad.netUnsubscribe : https://launchpad.net/~maria-discussMore 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

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[Maria-discuss] Cross compile error
by Lucian Cristian 16 May '17

16 May '17

Hi I'm trying to cross compile (any 10.* versions) using musl and uClibc++ for a LEDE/Openwrt system and I have problems with these errors: staging_dir/target-x86_64_musl/usr/include/uClibc++/associative_base:444:8: error: 'void std::__base_associative<Key, ValueType, Compare, Allocator>::swap(std::__base_associative<Key, ValueType, Compare, Allocator>&) [with Key = dict_foreign_t*; ValueType = dict_foreign_t*; Compare = dict_foreign_compare; Allocator = ut_allocator<dict_foreign_t*>]' is protected void __base_associative<Key, ValueType, Compare, Allocator>::swap(__base_associative<Key, ValueType, Compare, Allocator>& m) ^ build_dir/target-x86_64_musl/mariadb-10.2.4/storage/innobase/dict/dict0dict.cc:1996:32: error: within this context table->foreign_set.swap(fk_set); ^ storage/innobase/CMakeFiles/innobase.dir/build.make:542: recipe for target 'storage/innobase/CMakeFiles/innobase.dir/dict/dict0dict.cc.o' failed staging_dir/target-x86_64_musl/usr/include/uClibc++/map: In instantiation of 'std::map<Key, T, Compare, Allocator>::reference std::map<Key, T, Compare, Allocator>::operator[](const key_type&) [with Key = const char*; T = dict_index_t*; Compare = ut_strcmp_functor; Allocator = ut_allocator<std::pair<const char*, dict_index_t*> >; std::map<Key, T, Compare, Allocator>::reference = std::pair<const char*, dict_index_t*>&; std::map<Key, T, Compare, Allocator>::key_type = const char*]': build_dir/target-x86_64_musl/mariadb-10.2.4/storage/innobase/dict/dict0stats.cc:2518:22: required from here staging_dir/target-x86_64_musl/usr/include/uClibc++/map:143:13: error: invalid initialization of reference of type 'std::map<const char*, dict_index_t*, ut_strcmp_functor, ut_allocator<std::pair<const char*, dict_index_t*> > >::reference {aka std::pair<const char*, dict_index_t*>&}' from expression of type 'dict_index_t*' return i->second; ^ storage/innobase/CMakeFiles/innobase.dir/build.make:614: recipe for target 'storage/innobase/CMakeFiles/innobase.dir/dict/dict0stats.cc.o' failed build_dir/target-x86_64_musl/mariadb-10.2.4/plugin/handler_socket/handlersocket/hstcpsvr.cpp: In constructor 'dena::hstcpsvr::hstcpsvr(const dena::config&)': build_dir/target-x86_64_musl/mariadb-10.2.4/plugin/handler_socket/handlersocket/hstcpsvr.cpp:92:37: error: invalid initialization of non-const reference of type 'std::auto_ptr<volatile dena::database_i>&' from an rvalue of type 'dena::database_ptr {aka std::auto_ptr<volatile dena::database_i>}' cshared.dbptr = database_i::create(c); ^ In file included from staging_dir/target-x86_64_musl/usr/include/uClibc++/vector:22:0, from build_dir/target-x86_64_musl/mariadb-10.2.4/plugin/handler_socket/handlersocket/hstcpsvr.cpp:12: staging_dir/target-x86_64_musl/usr/include/uClibc++/memory:137:12: note: initializing argument 1 of 'std::auto_ptr<T>& std::auto_ptr<T>::operator=(std::auto_ptr<T>&) [with T = volatile dena::database_i]' auto_ptr& operator=(auto_ptr& p) throw(){ ^ plugin/handler_socket/CMakeFiles/handlersocket.dir/build.make:134: recipe for target 'plugin/handler_socket/CMakeFiles/handlersocket.dir/handlersocket/hstcpsvr.cpp.o' failed make[5]: *** [plugin/handler_socket/CMakeFiles/handlersocket.dir/handlersocket/hstcpsvr.cpp.o] Error 1 this is the command line (cd /build_dir/target-x86_64_musl/mariadb-10.2.4; CFLAGS="-Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -iremap/build_dir/target-x86_64_musl/mariadb-10.2.4:mariadb-10.2.4 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -fpic " CXXFLAGS="-Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -iremap/build_dir/target-x86_64_musl/mariadb-10.2.4:mariadb-10.2.4 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -fpic " LDFLAGS="-L/staging_dir/target-x86_64_musl/usr/lib -L/staging_dir/target-x86_64_musl/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/usr/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/lib -znow -zrelro " cmake -DCMAKE_SYSTEM_NAME=Linux -DCMAKE_SYSTEM_VERSION=1 -DCMAKE_SYSTEM_PROCESSOR=x86_64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS_RELEASE="-DNDEBUG" -DCMAKE_CXX_FLAGS_RELEASE="-DNDEBUG" -DCMAKE_C_COMPILER="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/x86_64-openwrt-linux-musl-gcc" -DCMAKE_C_COMPILER_ARG1="" -DCMAKE_CXX_COMPILER="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/g++-uc" -DCMAKE_CXX_COMPILER_ARG1="" -DCMAKE_ASM_COMPILER="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/x86_64-openwrt-linux-musl-gcc" -DCMAKE_ASM_COMPILER_ARG1="" -DCMAKE_EXE_LINKER_FLAGS:STRING="-L/staging_dir/target-x86_64_musl/usr/lib -L/staging_dir/target-x86_64_musl/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/usr/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/lib -znow -zrelro" -DCMAKE_MODULE_LINKER_FLAGS:STRING="-L/staging_dir/target-x86_64_musl/usr/lib -L/staging_dir/target-x86_64_musl/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/usr/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/lib -znow -zrelro -Wl,-Bsymbolic-functions" -DCMAKE_SHARED_LINKER_FLAGS:STRING="-L/staging_dir/target-x86_64_musl/usr/lib -L/staging_dir/target-x86_64_musl/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/usr/lib -L/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/lib -znow -zrelro -Wl,-Bsymbolic-functions" -DCMAKE_AR="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/x86_64-openwrt-linux-musl-gcc-ar" -DCMAKE_NM="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/x86_64-openwrt-linux-musl-gcc-nm" -DCMAKE_RANLIB="/staging_dir/toolchain-x86_64_gcc-5.4.0_musl/bin/x86_64-openwrt-linux-musl-gcc-ranlib" -DCMAKE_FIND_ROOT_PATH="/staging_dir/target-x86_64_musl/usr;/staging_dir/toolchain-x86_64_gcc-5.4.0_musl" -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=BOTH -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY -DCMAKE_STRIP=: -DCMAKE_INSTALL_PREFIX=/usr -DDL_LIBRARY=/staging_dir/target-x86_64_musl -DCMAKE_PREFIX_PATH=/staging_dir/target-x86_64_musl -DCMAKE_SKIP_RPATH=TRUE -DCMAKE_SYSTEM_NAME=Linux -DSTACK_DIRECTION=-1 -DWITH_WSREP=ON -DWITH_INNODB_DISALLOW_WRITES=1 -DCONNECT_WITH_JDBC=OFF -DWITHOUT_TOKUDB=1 -DIMPORT_EXECUTABLES=/build_dir/hostpkg/mariadb-10.2.4/host/import_executables.cmake /build_dir/target-x86_64_musl/mariadb-10.2.4 ) can someone give me an advice ? Regards

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