- discuss - lists.mariadb.org

[Maria-discuss] Doubts about Thread Pool
by Roberto Spadim 16 Sep '13

16 Sep '13

Hi guys, I'm testing threadpool on windows with mariadb 10.0.4 I'm running server with this command line: C:\Program Files\mariadb-10.0.4-win32\bin>mysqld --datadir=..\data\ --log_error=..\log --port=3306 --thread_pool_max_threads=3 Now I'm connected with 10 clients: 2rootlocalhost:41859mysqlSleep50.0003rootlocalhost:41860Sleep180.0004root localhost:41861Sleep130.0005rootlocalhost:41862Sleep110.0006root localhost:41867Sleep170.0007rootlocalhost:41955Sleep90.0008root localhost:41966Sleep40.0009rootlocalhost:41969Query0initshow processlist 0.00010rootlocalhost:42029Sleep90.00011rootlocalhost:42032Sleep40.000 *generated 2013-09-15 22:02:41 by HeidiSQL 8.0.0.4464<http://www.heidisql.com/> * My question is... how i know what thread pool is running each connection? -- Roberto Spadim SPAEmpresarial

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[Maria-discuss] New Question: Migrating from MySql: MariaDB server closing client connections unexpectedly
by AskMonty KB 16 Sep '13

16 Sep '13

Hello, A new question has been asked in "General FAQ" by vivek_kubaji: -------------------------------- We in the process of migrating from MySql to MariaDB due to licensing/commercial usage reasons. We have successfully replaced the MySql connector jar with MariaDB client jar (first change) and are now trying to replace MySql server with MariaDB server without changing the data files. All our applications run perfectly for about 8-12 hours after which we see the following exception: org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Cannot open connection Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426) at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144) at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:119) at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57) at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326) at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:494) at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:315) at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:257) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:102) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:209) at $Proxy4.getMessageCountByStatus(Unknown Source) at com.onmobile.cmfweb.monitoring.CmfMessagesMonitor.getMessageCounts(CmfMessagesMonitor.java:56) at sun.reflect.GeneratedMethodAccessor625.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:270) at com.onmobile.cmfshare.MethodInvockingBean.invoke(MethodInvockingBean.java:28) at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:212) at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:79) at org.quartz.core.JobRunShell.run(JobRunShell.java:203) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520) Caused by: java.sql.SQLNonTransientConnectionException: Could not connect to localhost:3306: unexpected end of stream, read 0bytes from 4 at org.mariadb.jdbc.internal.SQLExceptionMapper.get(SQLExceptionMapper.java:136) at org.mariadb.jdbc.internal.SQLExceptionMapper.throwException(SQLExceptionMapper.java:106) at org.mariadb.jdbc.Driver.connect(Driver.java:114) at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37) at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290) at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:840) at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:95) at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:544) at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423) ... 21 more Caused by: org.mariadb.jdbc.internal.common.QueryException: Could not connect to localhost:3306: unexpected end of stream, read 0bytes from 4 at org.mariadb.jdbc.internal.mysql.MySQLProtocol.connect(MySQLProtocol.java:509) at org.mariadb.jdbc.internal.mysql.MySQLProtocol.connect(MySQLProtocol.java:669) at org.mariadb.jdbc.internal.mysql.MySQLProtocol.<init>(MySQLProtocol.java:264) at org.mariadb.jdbc.Driver.connect(Driver.java:110) ... 28 more Caused by: java.io.EOFException: unexpected end of stream, read 0bytes from 4 at org.mariadb.jdbc.internal.common.packet.buffer.ReadUtil.readFully(ReadUtil.java:84) at org.mariadb.jdbc.internal.common.packet.buffer.ReadUtil.readFully(ReadUtil.java:92) at org.mariadb.jdbc.internal.common.packet.RawPacket.nextPacket(RawPacket.java:77) at org.mariadb.jdbc.internal.common.packet.SyncPacketFetcher.getRawPacket(SyncPacketFetcher.java:67) at org.mariadb.jdbc.internal.mysql.MySQLProtocol.connect(MySQLProtocol.java:467) ... 31 more The exceptions disappear if MySql server is used again. >From what I have debugged so far MariaDB server is closing the client connections for some reason. I initially suspected of idle connections but we are using Hibernate configurations like 'testOnBorrow' so it shouldn't be the case. Can anyone help us to find out the cause for this and help us fix the problem? Is there any specific configuration in MariaDB that I should be doing? I've even run our applications by increasing the value of the param 'interactive_timeout' in the MariaDB server but it did not help. Btw, we are using Spring-Hibernate and pooling our connections using Commons-pool jar. Any kind of help will be deeply appreciated. PS: The same question is also posted in 'stackoverflow'. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/migrating-from-mysql-mariadb-server-closing-client…

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[Maria-discuss] New Question: Optimize Aria
by AskMonty KB 14 Sep '13

14 Sep '13

Hello, A new question has been asked in "Aria" by subjakt: -------------------------------- When I want to use aria I need to configure the standard myisam variables in my my.ini or something new ? like aria_key_buffer_size or I dont know :)? I hope you understand... -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/optimize-aria/

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[Maria-discuss] New Question: How to install MariaDB rpms in CentOS 6.4 using rpm (not yum cmd) + handling mysql-libs conflicts
by AskMonty KB 14 Sep '13

14 Sep '13

Hello, A new question has been asked in "MariaDB community" by theone: -------------------------------- I need to script the install of MariaDB using the rpm command in CentOS 6.4. I can't use yum since it's gong to be an offline install so there's no live access to the repository. The only MySQL package installed is mysql-libs as various other packages depend on it. When I did a test install of MariaDB with yum using the command: yum install MariaDB-client MariaDB-common MariaDB-compat MariaDB-devel MariaDB-server MariaDB-shared It correctly accounted for mysql-libs and uninstalled it at the end as MariaDB could handle the dependencies after it was installed: Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package MariaDB-client.x86_64 0:5.5.32-1 will be installed ---> Package MariaDB-common.x86_64 0:5.5.32-1 will be installed ---> Package MariaDB-compat.x86_64 0:5.5.32-1 will be obsoleting ---> Package MariaDB-devel.x86_64 0:5.5.32-1 will be installed ---> Package MariaDB-server.x86_64 0:5.5.32-1 will be installed ---> Package MariaDB-shared.x86_64 0:5.5.32-1 will be obsoleting ---> Package mysql-libs.x86_64 0:5.1.66-2.el6_3 will be obsoleted --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================================================================================== Package Arch Version Repository Size ==================================================================================================================================================================== Installing: MariaDB-client x86_64 5.5.32-1 mariadb 10 M MariaDB-common x86_64 5.5.32-1 mariadb 23 k MariaDB-compat x86_64 5.5.32-1 mariadb 2.7 M replacing mysql-libs.x86_64 5.1.66-2.el6_3 MariaDB-devel x86_64 5.5.32-1 mariadb 5.6 M MariaDB-server x86_64 5.5.32-1 mariadb 34 M MariaDB-shared x86_64 5.5.32-1 mariadb 1.1 M replacing mysql-libs.x86_64 5.1.66-2.el6_3 Transaction Summary My question is, what is the equivalent way to install the MariaDB packages using the rpm command only as opposed to yum? If I do rpm -ivh MariaDB*.rpm, I will get a ton of messages like the following about conflicts with mysql-libs: file /etc/my.cnf from install of MariaDB-common-5.5.32-1.x86_64 conflicts with file from package mysql-libs-5.1.66-2.el6_3.x86_64 file /usr/share/mysql/charsets/Index.xml from install of MariaDB-common-5.5.32-1.x86_64 conflicts with file from package mysql-libs-5.1.66-2.el6_3.x86_64 I used the --force option to install and then uninstalled mysql-libs and didn't get any weird messages but I'm not sure that is the cleanest method to handle the conflicts. So can someone confirm that installing MariaDB with the following rpm commands would be the same as using yum to install the packages and handle mysql-libs conflicts/removal: rpm -ivh --force MariaDB*.rpm rpm -e mysql-libs Thanks for any input! -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/how-to-install-mariadb-rpms-in-centos-64-using-rpm…

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[Maria-discuss] New Question: Replication stops after one hour or so
by AskMonty KB 11 Sep '13

11 Sep '13

Hello, A new question has been asked in "Replication" by Martin22: -------------------------------- Hi there, we operate a big MariaDB-server (24 CPUs, 48 GB RAM, Version 5.5.32 with Percona XTRADB). Because it is mission-critical it is replicated to another server of similar size (row based replication). We get the ball rolling with "innobackupex" (GREAT tool to clone a life server). After setting the slave to its coordinates it starts up, catches up to the master (times behind = 0) and all is well. For an hour. Or four. Or two days. Then the slave suddenly stops executing the masters binlog. There are no errors logged. I checked the binlog and relaylog on master and slave around the last log entry processed and can't find anything strange. I'm at a total loss. I can't say that I'm an MySQL or MariaDB specialist, so I'd like to reach out to this community in order to get some idea what's happening. Anybody got an idea? Thanks in advance! Best regards Martin Trenz, Soquero GmbH, Frankfurt, Germany -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/replication-stops-after-one-hour-or-so/

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[Maria-discuss] MariaDB Java Client 1.1.4 Released
by Daniel Bartholomew 10 Sep '13

10 Sep '13

The MariaDB project is pleased to announce the immediate availability of the MariaDB Java Client 1.1.4. This is a Stable (GA) release. - - Links - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MariaDB Java Client 1.1.4 - Release Notes: https://mariadb.com/kb/en/mariadb-java-client-114-release-notes/ - Changelog: https://mariadb.com/kb/en/mariadb-java-client-114-changelog/ - Downloads: https://downloads.mariadb.org/client-java/1.1.4/ Overview of the MariaDB Java Client: https://kb.askmonty.org/en/about-the-mariadb-java-client/ - - 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 MariaDB, please see our "contributing" and "donations" pages. We also have merchandise available in a cafepress store. - https://kb.askmonty.org/en/contributing - https://mariadb.org/en/donate/ - http://www.cafepress.com/mariadb 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: Unable to get pdo_mysql to work with CentOS 6 and MariaDB 5.5.32
by AskMonty KB 10 Sep '13

10 Sep '13

Hello, A new question has been asked in "Client libraries" by Ruskicowboy: -------------------------------- I just installed from YUM the MariaDB-server and MariaDB-client. These are the packages installed: compat-mysql55.x86_64 MariaDB-client.x86_64 MariaDB-common.x86_64 MariaDB-compat.x86_64 MariaDB-server.x86_64 MariaDB-shared.x86_64 But when trying to run a PHP script that uses PDO (which worked with MySQL 5.5), I get this error: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - /usr/lib64/php/modules/pdo_mysql.so: symbol mysql_options, version libmysqlclient_18 not defined in file libmysqlclient.so.18 with link time reference in Unknown on line 0 I have searched Google and here quite a bit but can't seem to find the answer. Any help would be greatly appreciated. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/unable-to-get-pdo_mysql-to-work-with-centos-6-and-…

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Re: [Maria-discuss] Fwd: [Dbmail] MariaDB and dbmail
by Reindl Harald 03 Sep '13

03 Sep '13

if it would be that easy i am only a guy try to help dbmail and not that good in data details and how to reproduce a valid test set, al i can say is that it wasted a lot of hours to figure out why the machines of the dbmail-developer are beahve differently in case of nsetd mime-messages and that it is caused by MariaDB afetr that i searched my archive for the mail below AFAIK i even tried to bring MariaDB/DBMail community together months ago *please* some MariaDB developers could you connect to dbmail/libzdb to sort out this problem because from the original post below and the feedback of dbmail-developer the query is correct with the terminal client so something goes wrong in combination with libzdb IMHO this *must not* happen if MariaDB claims to be a drop-in-replacemnet Am 02.09.2013 00:44, schrieb Roberto Spadim: > Could you send some data to test? > > Em 01/09/2013 18:37, "Reindl Harald" <h.reindl(a)thelounge.net <mailto:h.reindl@thelounge.net>> escreveu: > > please can someone from the MariaDB developers > MariaDB 5.5.32 is running here on test-machines > > this is todays feedback of the dbmail core-developer and beause > more and more distributions including Fedora/OpenSuSE and AFAIK > even RHEL7 switch to MariaDB this is a *serious* problem which is > not what a "drop-in replacement" should do and a show-stopper > rollout Fedora 19 at all in the near future > > > Anyway, MariaDB doesn't even pass the basic unit-tests > > > > Looks like this maybe libzdb related. The ordering of the query > > retrieving mime parts is ok on the console, but *not* when looping > > over the result in libzdb. > > > > MariaDB is *no-go* at this moment. Just what I experienced a year > > ago or so. I'm sorry, but I don't think I'll hold 3.1.4 for that > > not a regression at all. > > -------- Original-Nachricht -------- > Betreff: Re: [Dbmail] MariaDB and dbmail > Datum: Tue, 02 Apr 2013 19:47:15 +0400 > Von: Sergej Pupykin <ml(a)sergej.pp.ru <mailto:ml@sergej.pp.ru>> > An: DBMail mailinglist <dbmail(a)dbmail.org <mailto:dbmail@dbmail.org>> > > At Thu, 20 Sep 2012 10:46:52 +0800, > zamri <myzamri(a)gmail.com <mailto:myzamri@gmail.com>> wrote: > > MariaDB is fully compatible with MySQL. Migration is done. So far so good. Phewww!... > > > > Now I need to do some research on tuning mariadb if needed. > > I found that after migration following SQL returns wrong sorted data: > > SELECT > l.part_key, > l.part_depth, > l.part_order, > l.is_header, > DATE_FORMAT(ph.internal_date,GET_FORMAT(DATETIME,'ISO')), > data > FROM > dbmail_mimeparts p > JOIN dbmail_partlists l ON p.id <http://p.id> = l.part_id > JOIN dbmail_physmessage ph ON ph.id <http://ph.id> = l.physmessage_id > WHERE l.physmessage_id = <ID> > ORDER BY l.part_key,l.part_order ASC; > > however when I run it from command line it works well. > > Probably it does not fail always because of not all emails damaged. > > Not sure if it caused by migration to mariadb, but problem appeared > near same time.

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[Maria-discuss] User Defined Functions - without C
by Roberto Spadim 03 Sep '13

03 Sep '13

Hi guys, could i write user defined functions using python/php/perl or others languages? any development about this? -- Roberto Spadim SPAEmpresarial

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[Maria-discuss] RFC - CREATE PROCEDURE clauses (question about docs from mariadb-discuss)
by Roberto Spadim 02 Sep '13

02 Sep '13

Hi mariadb-devel guys, could anyone help here in a documentation problem? (maybe not a problem...) *Please answer the BOLD questions* We are talking about CREATE PROCEDURE , about DETERMINISTIC / NO SQL http://dev.mysql.com/doc/refman/5.6/en/create-procedure.html *characteristic*: COMMENT '*string*' | LANGUAGE SQL | *[NOT] DETERMINISTIC* | { CONTAINS SQL | *NO SQL* | READS SQL DATA | MODIFIES SQL DATA } | SQL SECURITY { DEFINER | INVOKER } *--------* *from mariadb-discuss:* *--------* Hi Federico, sorry i read some points and start writing, i will read and write after... i will answer with my experience as an user, not as a mariadb/mysql developer... 2013/9/2 Federico Razzoli <federico_raz(a)yahoo.it> > Hi Roberto > I'll try to be more clear, please read carefully before answering > ok I know what a deterministic expression is - but *what kinds of output must > be deterministic for a procedure to be defined as DETERMINISTIC?* > hummm i don't know, but for procedure, there isn't a deterministic output right? just for funcitons... maybe it's a parser problem, allow deterministic keyword for procedures (must check) i'm thinking about, *why we use deterministic procs, and non deterministic procs?* *this change something important in mysql server? replication, query cache? other performace considerations?* > There are many types of output for a proc: > * OUT params > * SELECTs > * writes on tables > * SET @var > hum.... from what i remember procedure ~= function without return, something like a "void FUNCTION( any parameters )" function ~= a procedure that return values, in other words it must be different from void... that's why i think it's a problem at parser allowing deterministic keyword at procedure, but must check... i don't know if this keyword change something in mysql/mariadb code > For a deterministic proc, do all of these need to be deterministic? > well, for me, procs are always non deterministics since it don't change query cache invalidation and replication (must be done in binary i think) > * I guess the answer isn't easy. > * *yeah, i see, we need a simple answer not a simplified answer* > -- > For "NO SQL" a complete list of SQL statements would be needed. If we use > this as a reference: > http://dev.mysql.com/doc/refman/5.6/en/sql-syntax.html > , even RETURN seems to be a SQL statement, yes, maybe the point isn't the SQL statements list, but other functions that mysql/mariadb server do? i don't know... NO SQL maybe is different from NOSQL (memcache,mongo,etc...) since nosql is newer than mysql procedures the point is *what's NO SQL in CREATE PROCEDURE ?* but of course it can't be true, because it's impossible to write a func > without RETURN. > yeah, maybe we have a problem at docs... let's see if anyone else know about this... maybe we need help from mariadb-devel list, i will include in this email... > > Greetings > Federico > bye =) thanks guys -- Roberto Spadim

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