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From "Julian Reschke (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-4082) Don't pool prepared statements using lists
Date Fri, 04 Mar 2016 10:19:40 GMT

    [ https://issues.apache.org/jira/browse/OAK-4082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179676#comment-15179676
] 

Julian Reschke commented on OAK-4082:
-------------------------------------

Collecting mysql logs first...

> Don't pool prepared statements using lists
> ------------------------------------------
>
>                 Key: OAK-4082
>                 URL: https://issues.apache.org/jira/browse/OAK-4082
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: rdbmk
>            Reporter: Tomek Rękawek
>            Assignee: Julian Reschke
>             Fix For: 1.6
>
>         Attachments: OAK-4082.patch
>
>
> In the RDBDocumentStoreJDBC we should invoke {{setPoolable(false)}} on all prepared statements
containing a list of ids. Otherwise we can get exceptions like this:
> {noformat}
> 15:45:58 Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Can't
create more than max_prepared_stmt_count statements (current value: 16382)
> 15:45:58 	at sun.reflect.GeneratedConstructorAccessor23.newInstance(Unknown Source)
> 15:45:58 	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> 15:45:58 	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> 15:45:58 	at com.mysql.jdbc.Util.handleNewInstance(Util.java:400)
> 15:45:58 	at com.mysql.jdbc.Util.getInstance(Util.java:383)
> 15:45:58 	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:980)
> 15:45:58 	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3847)
> 15:45:58 	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3783)
> 15:45:58 	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2447)
> 15:45:58 	at com.mysql.jdbc.ServerPreparedStatement.serverPrepare(ServerPreparedStatement.java:1514)
> 15:45:58 	at com.mysql.jdbc.ServerPreparedStatement.<init>(ServerPreparedStatement.java:389)
> 15:45:58 	at com.mysql.jdbc.ServerPreparedStatement.prepareBatchedInsertSQL(ServerPreparedStatement.java:2832)
> 15:45:58 	at com.mysql.jdbc.PreparedStatement.executeBatchedInserts(PreparedStatement.java:1524)
> 15:45:58 	at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1262)
> 15:45:58 	at org.apache.jackrabbit.oak.plugins.document.rdb.RDBDocumentStoreJDBC.insert(RDBDocumentStoreJDBC.java:302)
> 15:45:58 	at org.apache.jackrabbit.oak.plugins.document.rdb.RDBDocumentStoreJDBC.update(RDBDocumentStoreJDBC.java:446)
> 15:45:58 	at org.apache.jackrabbit.oak.plugins.document.rdb.RDBDocumentStore.bulkUpdate(RDBDocumentStore.java:456)
> 15:45:58 	... 21 more
> {noformat}



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