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https://issues.apache.org/jira/browse/HBASE-4528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HBASE-4528:
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Attachment: appendNoSyncPut1.txt
The changes the multiPut operation so that the sync to the wal occurs outside
the rowlock.
This enhancement is done only to HRegion.mut(Put[]) because this is the only
method that gets invoked from an application. The HRegion.put(Put) is used only
by unit tests and should possibly be deprecated.
I have attached a unit test. I have not yet run all unit tests, but early
feedback on this patch will be very helpful.
> The put operation can release the rowlock before sync-ing the Hlog
> ------------------------------------------------------------------
>
> Key: HBASE-4528
> URL: https://issues.apache.org/jira/browse/HBASE-4528
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: appendNoSyncPut1.txt
>
>
> This allows for better throughput when there are hot rows. A single row
> update improves from 100 puts/sec/server to 5000 puts/sec/server.
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