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https://issues.apache.org/jira/browse/HIVE-21153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16749790#comment-16749790
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Zoltan Haindrich commented on HIVE-21153:
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which version of Hive are you using?
> task run in parallel cause ArrayIndexOutOfBoundsException
> ---------------------------------------------------------
>
> Key: HIVE-21153
> URL: https://issues.apache.org/jira/browse/HIVE-21153
> Project: Hive
> Issue Type: Bug
> Reporter: yx91490
> Priority: Major
>
> It happens occasionally when we run sql in parallel.the reason is HiveConf
> class is not thread safe, and SessionState.createSessionDirs() is not
> Synchronized.
> the error message:
> java.lang.ArrayIndexOutOfBoundsException: 22
> at java.util.ArrayList.add(ArrayList.java:459)
> at org.apache.hadoop.hive.conf.HiveConf.setupRestrictList(HiveConf.java:3216)
> at org.apache.hadoop.hive.conf.HiveConf.addToRestrictList(HiveConf.java:3191)
> at
> org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:651)
> at
> org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:547)
> at org.apache.hadoop.hive.ql.exec.TaskRunner.run(TaskRunner.java:78)
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