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https://issues.apache.org/jira/browse/HBASE-4716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142361#comment-13142361
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Ted Yu commented on HBASE-4716:
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When familyPaths is null, hasMultipleColumnFamilies() returns false.
Just want to confirm.
Personally I think patch v1 looks cleaner.
> Improve locking for single column family bulk load
> --------------------------------------------------
>
> Key: HBASE-4716
> URL: https://issues.apache.org/jira/browse/HBASE-4716
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.0
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 0.92.0
>
> Attachments: 4716-v2.txt, 4716.addendum, 4716.txt
>
>
> HBASE-4552 changed the locking behavior for single column family bulk load,
> namely we don't need to take write lock.
> A read lock would suffice in this scenario.
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