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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5945) Reduce buffer copies in IPC server response path
Date Sat, 05 Jan 2013 04:14:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544570#comment-13544570
] 

Hadoop QA commented on HBASE-5945:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12563396/5945-in-progress.2.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified
tests.

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3873//console

This message is automatically generated.
                
> Reduce buffer copies in IPC server response path
> ------------------------------------------------
>
>                 Key: HBASE-5945
>                 URL: https://issues.apache.org/jira/browse/HBASE-5945
>             Project: HBase
>          Issue Type: Improvement
>          Components: IPC/RPC
>    Affects Versions: 0.96.0
>            Reporter: Todd Lipcon
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 0.96.0
>
>         Attachments: 5945-in-progress.2.patch, 5945-in-progress.patch, buffer-copies.txt,
even-fewer-copies.txt, hbase-5495.txt
>
>
> The new PB code is sloppy with buffers and makes several needless copies. This increases
GC time a lot. A few simple changes can cut this back down.

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