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https://issues.apache.org/jira/browse/HIVE-12594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15799575#comment-15799575
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Wei Zheng commented on HIVE-12594:
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OK, +1
> X lock on partition should not conflict with S lock on DB
> ---------------------------------------------------------
>
> Key: HIVE-12594
> URL: https://issues.apache.org/jira/browse/HIVE-12594
> Project: Hive
> Issue Type: Improvement
> Components: Transactions
> Affects Versions: 1.0.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-12594.01.patch
>
>
> S lock on DB is acquired when creating a new table in that DB to make sure
> the DB is not dropped at the same time
> This should not conflict with operations such as rebuild index which takes an
> Exclusive lock on a partition. See also HIVE-10242
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