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https://issues.apache.org/jira/browse/HBASE-12130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155435#comment-14155435
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Lars Hofhansl commented on HBASE-12130:
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Also, let's not just add hsync everywhere just like that. See HBASE-5954, this
has to be an optional thing!
> HBASE-11980 calls hflush and hsync doing near double the syncing work
> ---------------------------------------------------------------------
>
> Key: HBASE-12130
> URL: https://issues.apache.org/jira/browse/HBASE-12130
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0, 0.99.1
> Reporter: stack
> Assignee: stack
> Priority: Critical
> Attachments: 12130.txt, Screen Shot 2014-09-30 at 9.17.09 PM.png
>
>
> The HBASE-11980 change has us doing hflush and hsync every time we call sync
> (noticed profiling). Fix. Let me expose as config calling one or the other.
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