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https://issues.apache.org/jira/browse/HBASE-21748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16766528#comment-16766528
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Andrew Purtell commented on HBASE-21748:
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[~busbey] I accepted the patch into branch-1 anyway. Replacing size(), an O(N)
operation on CLSM, with a counter, which is O(1), is going to be an
improvement, and an analysis was already done on branch-2, although the
difference on branch-2 was magnified by locks taken during size() which are not
present in branch-1.
> Port HBASE-21738 (Remove all the CLSM#size operation in our memstore because
> it's an quite time consuming.) to branch-1
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-21748
> URL: https://issues.apache.org/jira/browse/HBASE-21748
> Project: HBase
> Issue Type: Sub-task
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Major
> Fix For: 1.5.0, 1.4.10, 1.3.4
>
> Attachments: HBASE-21748-branch-1.patch, HBASE-21748-branch-1.patch
>
>
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