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https://issues.apache.org/jira/browse/HBASE-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12770736#action_12770736
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Jean-Daniel Cryans commented on HBASE-1939:
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Damn forgot to mention that according to my many tests, single thread writing
is ~1% slower but using 9 threads you get a 15-20% improvement.
> HLog group commit
> -----------------
>
> Key: HBASE-1939
> URL: https://issues.apache.org/jira/browse/HBASE-1939
> Project: Hadoop HBase
> Issue Type: New Feature
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Fix For: 0.21.0
>
> Attachments: HBASE-1939.patch
>
>
> Currently multiple clients writing to a RS are serialized when sync'ing their
> appends. Implementing group commit can help this by being aware of all the
> clients in that queue.
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