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https://issues.apache.org/jira/browse/HBASE-9754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800084#comment-13800084
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stack commented on HBASE-9754:
------------------------------
On 0.96, looks good but are there numbers on the improvement? If nothing
definitive, lets hold off (This is the new 'Stack', the one that only wants bug
fixes and definite perf improvement committed to 0.96; let the new stuff happen
in the next release, 0.98).
> 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-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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