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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2018/04/20 03:18:00 UTC

[jira] [Commented] (HBASE-20459) Majority of scan CPU time in HBase-1 spent in size estimation

    [ https://issues.apache.org/jira/browse/HBASE-20459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16445214#comment-16445214 ] 

Lars Hofhansl commented on HBASE-20459:
---------------------------------------

Just this?! Avoids recalculating arrayHeaderSize over and over.

> 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
>    Affects Versions: 1.4.3
>            Reporter: Lars Hofhansl
>            Priority: Major
>             Fix For: 1.5.0, 1.4.4
>
>         Attachments: 20459.txt, Screenshot_20180419_162559.png
>
>
> See attached screenshot. Will look into a fix later.



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