giraph-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-477) Fetching locality info in InputSplitPathOrganizer causes jobs to hang
Date Fri, 11 Jan 2013 05:50:12 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550853#comment-13550853
] 

Hudson commented on GIRAPH-477:
-------------------------------

Integrated in Giraph-trunk-Commit #592 (See [https://builds.apache.org/job/Giraph-trunk-Commit/592/])
    GIRAPH-477: Fetching locality info in InputSplitPathOrganizer causes jobs to hang (apresta
via ereisman) (Revision e1a7f2905b7afc0d621f129a092b5c7fc14e97ab)

     Result = SUCCESS
ereisman : http://git-wip-us.apache.org/repos/asf?p=giraph.git&a=commit&h=e1a7f2905b7afc0d621f129a092b5c7fc14e97ab
Files : 
* CHANGELOG
* giraph-core/src/main/java/org/apache/giraph/worker/InputSplitsCallable.java
* giraph-core/src/main/java/org/apache/giraph/master/BspServiceMaster.java
* giraph-core/src/test/java/org/apache/giraph/TestBspBasic.java
* giraph-core/src/main/java/org/apache/giraph/worker/InputSplitPathOrganizer.java
* giraph-core/src/main/java/org/apache/giraph/conf/GiraphConstants.java

                
> Fetching locality info in InputSplitPathOrganizer causes jobs to hang
> ---------------------------------------------------------------------
>
>                 Key: GIRAPH-477
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-477
>             Project: Giraph
>          Issue Type: Bug
>            Reporter: Alessandro Presta
>            Assignee: Alessandro Presta
>             Fix For: 0.2.0
>
>         Attachments: GIRAPH-477.patch, GIRAPH-477.patch
>
>
> In the presence of many input splits (>6000 in our case) and input split threads (3000),
the loop that fetches locality info for all splits from ZooKeeper becomes a bottleneck. A
few workers aren't able to even iterate once over the list, run into increased GC pauses,
and eventually time out.
> Furthermore, depending on the cluster configuration, it's not always possible/useful
to exploit locality.
> We should add a flag so that the feature can be optionally disabled.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message