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https://issues.apache.org/jira/browse/HIVE-2022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13002184#comment-13002184
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Paul Yang commented on HIVE-2022:
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Apologies for the build break - Ning and I are looking into fixing some issues
with my build environment.
> Making JDO thread-safe by default
> ---------------------------------
>
> Key: HIVE-2022
> URL: https://issues.apache.org/jira/browse/HIVE-2022
> Project: Hive
> Issue Type: Bug
> Components: Configuration, Metastore
> Reporter: Ning Zhang
> Assignee: Ning Zhang
> Fix For: 0.8.0
>
> 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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