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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-236) job tracker should refuse connection from a task tracker with a different version number
Date Thu, 05 Jun 2008 13:35:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602642#action_12602642
] 

Hadoop QA commented on HADOOP-236:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12383449/236_v2.patch
  against trunk revision 663487.

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +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 does not introduce any new Findbugs warnings.

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

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2588/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2588/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2588/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2588/console

This message is automatically generated.

> job tracker should refuse connection from a task tracker with a different version number
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-236
>                 URL: https://issues.apache.org/jira/browse/HADOOP-236
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.2.1
>            Reporter: Hairong Kuang
>            Assignee: Sharad Agarwal
>             Fix For: 0.18.0
>
>         Attachments: 236_v1.patch, 236_v2.patch
>
>
> After one mapred system upgrade, we noticed that all tasks assigned to one task tracker
failed. It turned out that for some reason the task tracker was not upgraded.
> To avoid this, a task tracker should reports its version # when it registers itsself
with a job tracker. If the job tracker receives an inconsistent version #, it should refuse
the connection.

-- 
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