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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2011/02/27 02:33:58 UTC
[jira] Commented: (MAPREDUCE-2214) TaskTracker should release slot
if task is not launched
[ https://issues.apache.org/jira/browse/MAPREDUCE-2214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999860#comment-12999860 ]
Hadoop QA commented on MAPREDUCE-2214:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12466033/MAPREDUCE-2214.patch
against trunk revision 1074251.
+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 new tests are needed for this patch.
Also please list what manual steps were performed to verify 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 (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 passed core unit tests.
-1 contrib tests. The patch failed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/48//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/48//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/48//console
This message is automatically generated.
> TaskTracker should release slot if task is not launched
> -------------------------------------------------------
>
> Key: MAPREDUCE-2214
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2214
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.1
> Reporter: Ramkumar Vadali
> Assignee: Ramkumar Vadali
> Attachments: MAPREDUCE-2214.patch
>
>
> TaskTracker.TaskInProgress.launchTask() does not launch a task if it is not in an expected state. However, in the case where the task is not launched, the slot is not released. We have observed this in production - the task was in SUCCEEDED state by the time launchTask() got to it and then the slot was never released. It is not clear how the task got into that state, but it is better to handle the case.
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