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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-8335) Investigate unit test performance regressions between hadoop1 and hadoop2
Date Fri, 12 Apr 2013 19:58:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630204#comment-13630204
] 

Jonathan Hsieh edited comment on HBASE-8335 at 4/12/13 7:57 PM:
----------------------------------------------------------------

I suspected something simlar when I figured out HBASE-7636. I did a run with shortcircuit
reads disabled (-Dhbase.tests.use.shortciruit.reads=false) and experienced the same slowdown,
so I don't think that is it.

(Had typo in 'short circuit' in comment. )
                
      was (Author: jmhsieh):
    I suspected something simlar when I figured out HBASE-7636. I did a run with shortcircuit
reads disabled (-Dhbase.tests.use.shortcuirt.reads=false) and experienced the same slowdown,
so I don't think that is it.
                  
> Investigate unit test performance regressions between hadoop1 and hadoop2
> -------------------------------------------------------------------------
>
>                 Key: HBASE-8335
>                 URL: https://issues.apache.org/jira/browse/HBASE-8335
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jonathan Hsieh
>             Fix For: 0.95.1
>
>
> HBASE-7606 and HBASE-7605 showed 2-3x performance regressions when comparing running
on top of hadoop1 (1.1.2) and hadoop2 (2.0.2-alpha). 
> We need to figure out why.

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