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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1973) HA: HDFS clients must handle namenode failover and switch over to the new active namenode.
Date Thu, 06 Oct 2011 05:16:30 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13121729#comment-13121729
] 

Hadoop QA commented on HDFS-1973:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12497935/HDFS-1973-HDFS-1623.patch
  against trunk revision .

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

    +1 tests included.  The patch appears to include 2 new or modified tests.

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

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 1 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 passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1340//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1340//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1340//console

This message is automatically generated.
                
> HA: HDFS clients must handle namenode failover and switch over to the new active namenode.
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1973
>                 URL: https://issues.apache.org/jira/browse/HDFS-1973
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Suresh Srinivas
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-1973-HDFS-1623.patch, HDFS-1973-HDFS-1623.patch, HDFS-1973-HDFS-1623.patch,
HDFS-1973-HDFS-1623.patch, HDFS-1973-HDFS-1623.patch, hdfs-1973.0.patch
>
>
> During failover, a client must detect the current active namenode failure and switch
over to the new active namenode. The switch over might make use of IP failover or some thing
more elaborate such as zookeeper to discover the new active.

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