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https://issues.apache.org/jira/browse/MAPREDUCE-4890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13538636#comment-13538636
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Hudson commented on MAPREDUCE-4890:
-----------------------------------
Integrated in Hadoop-trunk-Commit #3154 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/3154/])
MAPREDUCE-4890. Invalid TaskImpl state transitions when task fails while
speculating. Contributed by Jason Lowe (Revision 1425223)
Result = SUCCESS
jlowe : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1425223
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskImpl.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestTaskImpl.java
> Invalid TaskImpl state transitions when task fails while speculating
> --------------------------------------------------------------------
>
> Key: MAPREDUCE-4890
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4890
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mr-am
> Affects Versions: 2.0.2-alpha, 0.23.5
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Critical
> Attachments: MAPREDUCE-4890.patch
>
>
> There are a couple of issues when a task fails while speculating (i.e.:
> multiple attempts are active):
> # The other active attempts are not killed.
> # TaskImpl's FAILED state does not handle the T_ATTEMPT_* set of events which
> can be sent from the other active attempts. These all need to be handled
> since they can be sent asynchronously from the other active task attempts.
> Failure to handle this properly means jobs that are configured to normally
> tolerate failures via mapreduce.map.failures.maxpercent or
> mapreduce.reduce.failures.maxpercent and also speculate can easily end up
> failing due to invalid state transitions rather than complete successfully
> with a few explicitly allowed task failures.
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