Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: mapreduce-issues@hadoop.apache.org
Date: Fri, 3 Aug 2012 13:01:05 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <47132737.10101.1343998865757.JavaMail.jiratomcat@issues-vm>
In-Reply-To: 
 <330348378.28383.1319760572342.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (MAPREDUCE-3289) Make use of fadvise in the NM's
 shuffle handler
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/MAPREDUCE-3289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428052#comment-13428052 ] 

Hudson commented on MAPREDUCE-3289:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk #1124 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1124/])
    MAPREDUCE-3289. Make use of fadvise in the NM's shuffle handler. (Contributed by Todd Lipcon and Siddharth Seth) (Revision 1368718)

     Result = SUCCESS
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1368718
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedChunkedFile.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/FadvisedFileRegion.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/ShuffleHandler.java

                
> Make use of fadvise in the NM's shuffle handler
> -----------------------------------------------
>
>                 Key: MAPREDUCE-3289
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3289
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2, nodemanager, performance
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 1.2.0, 2.2.0-alpha
>
>         Attachments: 3289-1.txt, 3289-2.txt, MAPREDUCE-3289.branch-1.patch, MAPREDUCE-3289.branch-1.patch, MR3289_trunk.txt, MR3289_trunk_2.txt, MR3289_trunk_3.txt, mr-3289.txt
>
>
> Using the new NativeIO fadvise functions, we can make the NodeManager prefetch map output before it's send over the socket, and drop it out of the fs cache once it's been sent (since it's very rare for an output to have to be re-sent). This improves IO efficiency and reduces cache pollution.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira