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https://issues.apache.org/jira/browse/HBASE-9754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13808543#comment-13808543
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stack commented on HBASE-9754:
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bq. Looks like
TestRegionObserverScannerOpenHook#testRegionObserverCompactionTimeStacking is
the test that could have caught the issue.
But it did not, right?
Was also wondering if ".. looks good but are there numbers on the improvement?"
Is there a micro benchmark that can be done to show improvement?
> Eliminate threadlocal from MVCC code
> ------------------------------------
>
> Key: HBASE-9754
> URL: https://issues.apache.org/jira/browse/HBASE-9754
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Ted Yu
> Fix For: 0.98.0
>
> Attachments: 9754-0.94.txt, 9754-0.94-v2.txt, 9754-addendum.txt,
> 9754-rp-0.txt, 9754-rp-1.txt, 9754-rp-hregion.txt, 9754-rp-hregion-v2.txt,
> 9754-rp-hregion-v3.txt
>
>
> Brought up by [~vrodionov] and [[email protected]].
> Currently we use ThreadLocals to communicate the current readpoint between a
> RegionScanner and the Store\{File}Scanner's down the stack.
> Since ThreadLocals are not cheap we should consider whether it is possible to
> pass the readpoint through the call stack instead.
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