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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4869) Lost Trackers may not be able to join back
Date Fri, 19 Dec 2008 09:59:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12658047#action_12658047

Amareshwari Sriramadasu commented on HADOOP-4869:

test-patch result:
     [exec] -1 overall.
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified
     [exec]                         Please justify why no tests are needed for this patch.
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec]     +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

> Lost Trackers may not be able to join back
> ------------------------------------------
>                 Key: HADOOP-4869
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4869
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Devaraj Das
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.20.0
>         Attachments: patch-4869.txt
> There is a bug in the heartbeat processing which shows up when TaskTrackers are lost.
Due to the bug, lost TTs may not be able to join back the JT after reinitializing (and binding
to a RPC port different from the previous one). This bug got introduced in HADOOP-4305.

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