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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1630) Unbounded waiting for response in YarnClientImpl.java causes thread to hang forever
Date Tue, 28 Jan 2014 01:24:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-1630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13883614#comment-13883614
] 

Hadoop QA commented on YARN-1630:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12625490/diff-1.txt
  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}.  The javadoc tool did not generate any 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:red}-1 core tests{color}.  The following test timeouts occurred in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client:

org.apache.hadoop.yarn.client.api.impl.TestNMClient

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2945//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2945//console

This message is automatically generated.

> Unbounded waiting for response in YarnClientImpl.java causes thread to hang forever
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-1630
>                 URL: https://issues.apache.org/jira/browse/YARN-1630
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 2.2.0
>            Reporter: Aditya Acharya
>            Assignee: Aditya Acharya
>         Attachments: diff-1.txt, diff.txt
>
>
> I ran an MR2 application that would have been long running, and killed it programmatically
using a YarnClient. The app was killed, but the client hung forever. The message that I saw,
which spammed the logs, was "Watiting for application application_1389036507624_0018 to be
killed."
> The RM log indicated that the app had indeed transitioned from RUNNING to KILLED, but
for some reason future responses to the RPC to kill the application did not indicate that
the app had been terminated.
> I tracked this down to YarnClientImpl.java, and though I was unable to reproduce the
bug, I wrote a patch to introduce a bound on the number of times that YarnClientImpl retries
the RPC before giving up.



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