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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2983) Relax the build version check to permit rolling upgrades within a release
Date Thu, 05 Apr 2012 01:45:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246935#comment-13246935
] 

Hadoop QA commented on HDFS-2983:
---------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12521419/HDFS-2983.patch
  against trunk revision .

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

    +1 tests included.  The patch appears to include 3 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 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +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 passed unit tests in .

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/2188//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2188//console

This message is automatically generated.
                
> Relax the build version check to permit rolling upgrades within a release
> -------------------------------------------------------------------------
>
>                 Key: HDFS-2983
>                 URL: https://issues.apache.org/jira/browse/HDFS-2983
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Eli Collins
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-2983.patch
>
>
> Currently the version check for DN/NN communication is strict (it checks the exact svn
revision or git hash, Storage#getBuildVersion calls VersionInfo#getRevision), which prevents
rolling upgrades across any releases. Once we have the PB-base RPC in place (coming soon to
branch-23) we'll have the necessary pieces in place to loosen this restriction, though perhaps
it takes another 23 minor release or so before we're ready to commit to making the minor versions
compatible.

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