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Posted to issues@hbase.apache.org by "Yu Li (JIRA)" <ji...@apache.org> on 2014/03/12 04:13:53 UTC
[jira] [Commented] (HBASE-9754) Eliminate threadlocal from MVCC
code
[ https://issues.apache.org/jira/browse/HBASE-9754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931344#comment-13931344 ]
Yu Li commented on HBASE-9754:
------------------------------
Hi [~lhofhansl] and [~yuzhihong@gmail.com],
Just would like to check is it ready now to commit this to 0.94? Or any work left to be done? I'm considering backport HBASE-10191(although still not commit to trunk, but seems will be in a short time) to 0.94 and observing some code gap there w/o this patch. Thanks. :-)
> 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-v2.txt, 9754-0.94.txt, 9754-addendum.txt, 9754-rp-0.txt, 9754-rp-1.txt, 9754-rp-hregion-v2.txt, 9754-rp-hregion-v3.txt, 9754-rp-hregion.txt
>
>
> Brought up by [~vrodionov] and [~yuzhihong@gmail.com].
> 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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