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https://issues.apache.org/jira/browse/HIVE-16334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15959261#comment-15959261
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Chaoyu Tang commented on HIVE-16334:
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LGTM, +1
> Query lock contains the query string, which can cause OOM on ZooKeeper
> ----------------------------------------------------------------------
>
> Key: HIVE-16334
> URL: https://issues.apache.org/jira/browse/HIVE-16334
> Project: Hive
> Issue Type: Improvement
> Components: Locking
> Reporter: Peter Vary
> Assignee: Peter Vary
> Attachments: HIVE-16334.2.patch, HIVE-16334.3.patch,
> HIVE-16334.4.patch, HIVE-16334.patch
>
>
> When there are big number of partitions in a query this will result in a huge
> number of locks on ZooKeeper. Since the query object contains the whole query
> string this might cause serious memory pressure on the ZooKeeper services.
> It would be good to have the possibility to truncate the query strings that
> are written into the locks
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