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https://issues.apache.org/jira/browse/HIVE-2022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001283#comment-13001283
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Paul Yang commented on HIVE-2022:
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+1 Will commit once tests pass.
> Making JDO thread-safe by default
> ---------------------------------
>
> Key: HIVE-2022
> URL: https://issues.apache.org/jira/browse/HIVE-2022
> Project: Hive
> Issue Type: Bug
> Reporter: Ning Zhang
> Assignee: Ning Zhang
> Attachments: HIVE-2022.patch
>
>
> If there are multiple thread accessing metastore concurrently, there are
> cases that JDO threw exceptions because of concurrent access of HashMap
> inside JDO. Setting javax.jdo.option.Multithreaded to true solves this issue.
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