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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4089) Hung Tasks never time out.
Date Fri, 30 Mar 2012 23:19:28 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242843#comment-13242843
] 

Hadoop QA commented on MAPREDUCE-4089:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12520679/MR-4089.txt
  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 generated 508 javac compiler warnings (more than the trunk's
current 507 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 failed these unit tests:
                  org.apache.hadoop.mapred.TestMiniMRClientCluster
                  org.apache.hadoop.mapreduce.v2.TestMROldApiJobs
                  org.apache.hadoop.mapred.TestJobCounters
                  org.apache.hadoop.mapred.TestSpecialCharactersInOutputPath
                  org.apache.hadoop.mapreduce.lib.output.TestJobOutputCommitter
                  org.apache.hadoop.mapreduce.v2.TestMiniMRProxyUser
                  org.apache.hadoop.mapreduce.v2.TestRMNMInfo
                  org.apache.hadoop.mapreduce.security.TestJHSSecurity
                  org.apache.hadoop.mapreduce.v2.TestUberAM
                  org.apache.hadoop.mapred.TestReduceFetch
                  org.apache.hadoop.mapreduce.TestChild
                  org.apache.hadoop.mapred.TestLazyOutput
                  org.apache.hadoop.mapred.TestReduceFetchFromPartialMem
                  org.apache.hadoop.mapreduce.v2.TestMRJobs
                  org.apache.hadoop.mapred.TestJobSysDirWithDFS
                  org.apache.hadoop.mapred.TestMiniMRBringup
                  org.apache.hadoop.mapreduce.TestMapReduceLazyOutput
                  org.apache.hadoop.mapred.TestJobCleanup
                  org.apache.hadoop.mapreduce.v2.TestSpeculativeExecution
                  org.apache.hadoop.conf.TestNoDefaultsJobConf
                  org.apache.hadoop.mapred.TestMiniMRChildTask
                  org.apache.hadoop.mapred.TestClientRedirect

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2121//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2121//console

This message is automatically generated.
                
> Hung Tasks never time out. 
> ---------------------------
>
>                 Key: MAPREDUCE-4089
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4089
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.2, 2.0.0, trunk
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Blocker
>         Attachments: MR-4089.txt, MR-4089.txt
>
>
> The AM will timeout a task through mapreduce.task.timeout only when it does not hear
from the task within the given timeframe.  On 1.0 a task must be making progress, either by
reading input from HDFS, writing output to HDFS, writing to a log, or calling a special method
to inform it that it is still making progress.
> This is because on 0.23 a status update which happens every 3 seconds is counted as progress.

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