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https://issues.apache.org/jira/browse/HBASE-15082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15111996#comment-15111996
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stack commented on HBASE-15082:
-------------------------------
Let me break up this patch. Fixing performance is predicated first on reorder
of the write pipeline. Let me get that in first. It looks like that might be
enough for this issue but to be proven with tooling that is yet to be written
(see sibling issue of this one). See HBASE-15158 for write path reordering.
Will be back here after that goes in.
> 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, 1.3.0
>
> Attachments: 15082.patch, 15082v10.patch, 15082v12.patch,
> 15082v13.patch, 15082v14.patch, 15082v14.patch, 15082v15.patch,
> 15082v16.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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