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https://issues.apache.org/jira/browse/HBASE-12148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14174426#comment-14174426
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stack commented on HBASE-12148:
-------------------------------
New patch.
Remove synchronize in TimeRangeTracker and use AtomicLongs instead.
Use the AtomicUtil updateMin and updateMax doing updating.
Behavior changes slightly in that min and max are no longer tied
by synchronization so better performance.
Will be back later with data on running this patch in context.... to ensure it
removes TRT as point of contention.
> Remove TimeRangeTracker as point of contention when many threads writing a
> Store
> --------------------------------------------------------------------------------
>
> Key: HBASE-12148
> URL: https://issues.apache.org/jira/browse/HBASE-12148
> Project: HBase
> Issue Type: Sub-task
> Components: Performance
> Affects Versions: 2.0.0, 0.99.1
> Reporter: stack
> Assignee: stack
> Fix For: 2.0.0, 0.98.8, 0.99.2
>
> Attachments:
> 0001-In-AtomicUtils-change-updateMin-and-updateMax-to-ret.patch,
> 12148.addendum.txt, 12148.txt, 12148.txt, 12148v2.txt, 12148v2.txt, Screen
> Shot 2014-10-01 at 3.39.46 PM.png, Screen Shot 2014-10-01 at 3.41.07 PM.png
>
>
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