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https://issues.apache.org/jira/browse/HBASE-12148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15200616#comment-15200616
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Walter Koetke commented on HBASE-12148:
---------------------------------------
Attaching another version (HBASE-12148-V3.patch) of the patch John Leach had
been working on, which removes synchronization from TimeRangeTracker. Our own
internal testing indicated there was lots 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: Walter Koetke
> Fix For: 2.0.0, 1.3.0, 0.98.18
>
> Attachments:
> 0001-In-AtomicUtils-change-updateMin-and-updateMax-to-ret.patch,
> 12148.addendum.txt, 12148.txt, 12148.txt, 12148v2.txt, 12148v2.txt,
> HBASE-12148.txt, HBASE-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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