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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1052) HDFS scalability with multiple namenodes
Date Thu, 21 Apr 2011 20:01:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022892#comment-13022892
] 

Hadoop QA commented on HDFS-1052:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12477028/HDFS-1052.4.patch
  against trunk revision 1095789.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 344 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    -1 javac.  The patch appears to cause tar ant target to fail.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed these core unit tests:


    -1 contrib tests.  The patch failed contrib unit tests.

    -1 system test framework.  The patch failed system test framework compile.

Test results: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/400//testReport/
Findbugs warnings: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/400//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/400//console

This message is automatically generated.

> HDFS scalability with multiple namenodes
> ----------------------------------------
>
>                 Key: HDFS-1052
>                 URL: https://issues.apache.org/jira/browse/HDFS-1052
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>         Attachments: Block pool proposal.pdf, HDFS-1052.3.patch, HDFS-1052.4.patch, HDFS-1052.patch,
Mulitple Namespaces5.pdf, high-level-design.pdf
>
>
> HDFS currently uses a single namenode that limits scalability of the cluster. This jira
proposes an architecture to scale the nameservice horizontally using multiple namenodes.

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