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https://issues.apache.org/jira/browse/MAPREDUCE-5835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13968493#comment-13968493
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Hadoop QA commented on MAPREDUCE-5835:
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{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12640078/MAPREDUCE-5835.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4510//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4510//console
This message is automatically generated.
> Killing Task might cause the job to go to ERROR state
> -----------------------------------------------------
>
> Key: MAPREDUCE-5835
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5835
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.4.0
> Reporter: Ming Ma
> Assignee: Ming Ma
> Priority: Critical
> Attachments: MAPREDUCE-5835.patch
>
>
> There could be a race condition if job is killed right after task attempt
> receives TA_DONE event. In that case, TaskImpl might receive
> T_ATTEMPT_SUCCEEDED followed by T_ATTEMPTED_KILLED for the same attempt, thus
> transition job to ERROR state.
> a. The task is in KILL_WAIT.
> b. TA receives TA_DONE event.
> c. Before TA transitions to SUCCEEDED state, Task sends TA_KILL event.
> d. TA transitions to SUCCEEDED state and thus send T_ATTEMPT_SUCCEEDED to the
> task. The task transitions to KILLED state.
> e. TA processes TA_KILL event and sends T_ATTEMPT_KILLED to the task.
> f. When task is in KILLED state, it can't handle T_ATTEMPT_KILLED event, thus
> transition job to ERROR state.
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