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https://issues.apache.org/jira/browse/HBASE-17049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang updated HBASE-17049:
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Attachment: delay-sync.patch
Tried to delay sync so we can aggregate more appends before actually issue a
sync. It could reduce the sync count greatly in WALPE with a 1ms delay, but the
performance is also reduced... And for PE, I can not get a better result
either...
I also set the initial buffer size to 80KB in FanOutOneBlockDFSOutput as there
is no progress in HBASE-17048.
[~stack] [~ram_krish] You guys could have a try to see if it helps. And you
guys could also try changing the batchSize to see if it helps. For me it does
not help either but [~ram_krish] said use a large batchSize could get a better
result for him.
Thanks.
> Find out why AsyncFSWAL issues much more syncs than FSHLog
> ----------------------------------------------------------
>
> Key: HBASE-17049
> URL: https://issues.apache.org/jira/browse/HBASE-17049
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: Duo Zhang
> Fix For: 2.0.0
>
> Attachments: delay-sync.patch
>
>
> https://issues.apache.org/jira/browse/HBASE-16890?focusedCommentId=15647590&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15647590
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