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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11939) TxnDbUtil should turn off jdbc auto commit
Date Thu, 24 Sep 2015 17:30:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14906694#comment-14906694
] 

Alan Gates commented on HIVE-11939:
-----------------------------------

+1

> TxnDbUtil should turn off jdbc auto commit
> ------------------------------------------
>
>                 Key: HIVE-11939
>                 URL: https://issues.apache.org/jira/browse/HIVE-11939
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Minor
>             Fix For: 1.3.0, 2.0.0
>
>         Attachments: HIVE-11939.1.patch
>
>
> TxnDbUtil uses jdbc transactions, but doesn't turn off auto commit. So some TestStreaming
tests are flaky. For example,
> {noformat}
> testTransactionBatchAbortAndCommit(org.apache.hive.hcatalog.streaming.TestStreaming)
 Time elapsed: 0.011 sec  <<< ERROR!
> java.sql.SQLException: Table/View 'TXNS' already exists in Schema 'APP'.
> 	at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
> 	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.duplicateDescriptorException(Unknown
Source)
> 	at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.addDescriptor(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.CreateTableConstantAction.executeConstantAction(Unknown
Source)
> 	at org.apache.derby.impl.sql.execute.MiscResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.hadoop.hive.metastore.txn.TxnDbUtil.prepDb(TxnDbUtil.java:72)
> 	at org.apache.hadoop.hive.metastore.txn.TxnDbUtil.prepDb(TxnDbUtil.java:131)
> 	at org.apache.hive.hcatalog.streaming.TestStreaming.<init>(TestStreaming.java:160)
> {noformat}



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