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https://issues.apache.org/jira/browse/HBASE-2467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12859109#action_12859109
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Jean-Daniel Cryans commented on HBASE-2467:
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But at a lower level somehow you still have to wait for another thread to
finish before writing your own stuff in the block right? So what you're telling
me is that 895 basically takes the grouping at a lower level?
> 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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