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https://issues.apache.org/jira/browse/HBASE-2467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12859101#action_12859101
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Jean-Daniel Cryans commented on HBASE-2467:
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bq. We need to rip out/amend the group commit code a bit to take advantage of
this.
-1 the advantage of group commit is that you don't sync every append, Dhruba
created HDFS-895 because it was slowing down group commit (syncs would wait on
appends from other threads, doesn't make sense).
> Concurrent flushers in HLog sync using HDFS-895
> -----------------------------------------------
>
> Key: HBASE-2467
> URL: https://issues.apache.org/jira/browse/HBASE-2467
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hbase-2467.txt
>
>
> HDFS-895 changes hflush() to be able to run concurrently from multiple
> threads, where flushes can be concurrent with further writes to the same file.
> We need to rip out/amend the group commit code a bit to take advantage of
> this.
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