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https://issues.apache.org/jira/browse/HBASE-20459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16445145#comment-16445145
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Lars Hofhansl commented on HBASE-20459:
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If the region server is not busy the query time will actually not increase, but
I see that the region server consumes between 25% and 40% more CPU time.
> Majority of scan 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
> Affects Versions: 1.4.3
> Reporter: Lars Hofhansl
> Priority: Major
> Fix For: 1.5.0, 1.4.4
>
> Attachments: Screenshot_20180419_162559.png
>
>
> See attached screenshot. Will look into a fix later.
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