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https://issues.apache.org/jira/browse/HBASE-20459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-20459.
---------------------------
Resolution: Fixed
Pushed to branch-2 and branch-2.0. Re-resolving.
> Majority of scan CPU time in HBase-1 spent in size estimation
> -------------------------------------------------------------
>
> Key: HBASE-20459
> URL: https://issues.apache.org/jira/browse/HBASE-20459
> Project: HBase
> Issue Type: Improvement
> Components: Performance, scan
> Affects Versions: 1.4.3
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Priority: Critical
> Fix For: 1.5.0, 1.4.4, 2.0.1
>
> Attachments: 20459-v2.txt, 20459.2.0.txt, 20459.txt,
> HBASE-20459.branch-2.0.001.patch, Screenshot_20180419_162559.png
>
>
> See attached screenshot. Will look into a fix later.
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