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https://issues.apache.org/jira/browse/HBASE-15082?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-15082:
--------------------------
Attachment: 15082v8.patch
Address [~anoop.hbase] and [~ramkrishna] feedback. The mvccNum not assigned was
a good one in particular.
Unifies how we set sequenceid on a Cell post WAL write.
Adds in the missing READ_UNCOMMITTED when doing the Get as part of a
read-modify op like increment/append.
Adds wait on sequenceid assign needed when no sync going on (this is rare event
but does loop/sleep because no more latches).
Move WAL messing to WALUtil and did some cleanup.
Clean some checkstyle.
Lets see how this does.
> Fix merge of MVCC and SequenceID performance regression
> -------------------------------------------------------
>
> Key: HBASE-15082
> URL: https://issues.apache.org/jira/browse/HBASE-15082
> Project: HBase
> Issue Type: Sub-task
> Components: Performance
> Reporter: stack
> Assignee: stack
> Priority: Critical
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: 15082.patch, 15082v2.patch, 15082v2.txt, 15082v3.txt,
> 15082v4.patch, 15082v5.patch, 15082v6.patch, 15082v7.patch, 15082v8.patch
>
>
> This is general fix for increments (appends, checkAnd*) perf-regression
> identified in the parent issue. HBASE-15031 has a narrow fix for branch-1.1
> and branch-1.0.
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