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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11444) Remove use of reflection for User#getShortName
Date Tue, 08 Jul 2014 22:04:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055590#comment-14055590
] 

Enis Soztutar commented on HBASE-11444:
---------------------------------------

+1. 

> Remove use of reflection for User#getShortName
> ----------------------------------------------
>
>                 Key: HBASE-11444
>                 URL: https://issues.apache.org/jira/browse/HBASE-11444
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.98.3
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>             Fix For: 0.99.0, 0.98.4
>
>         Attachments: HBASE-11444.patch, HBASE-11444.patch, IntegrationTestIngestWithACL.get.svg,
IntegrationTestIngestWithACL.get.svg, IntegrationTestIngestWithACL.put.svg, IntegrationTestIngestWithACL.put.svg
>
>
> The time we spend looking up a user's short name with User#getShortName in hot security
code paths is mostly spent in Class#getMethod, ~70%. This is only ~1% of overall CPU time
but is the bulk of time spent in AccessController#prePut, for example.



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