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From "Vinod Kumar Vavilapalli (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3586) Lots of AMs hanging around in PIG testing
Date Tue, 20 Dec 2011 20:03:30 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13173467#comment-13173467
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Vinod Kumar Vavilapalli commented on MAPREDUCE-3586:
----------------------------------------------------

Here's the bit of stack trace, again from Daniel:
{code}
"CompositeServiceShutdownHook for org.apache.hadoop.mapreduce.v2.app.MRAppMaster" prio=5 tid=1051e6000
nid=0x115ac5000 in Object.wait() [115ac4000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <7a5662ef0> (a java.lang.Thread)
    at java.lang.Thread.join(Thread.java:1210)
    - locked <7a5662ef0> (a java.lang.Thread)
    at java.lang.Thread.join(Thread.java:1263)
    at org.apache.hadoop.yarn.event.AsyncDispatcher.stop(AsyncDispatcher.java:104)
    at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:95)
    - locked <7a54ada90> (a org.apache.hadoop.mapreduce.v2.app.MRAppMaster)
    at org.apache.hadoop.yarn.service.CompositeService.stop(CompositeService.java:85)
    - locked <7a54ada90> (a org.apache.hadoop.mapreduce.v2.app.MRAppMaster)
    at org.apache.hadoop.yarn.service.CompositeService$CompositeServiceShutdownHook.run(CompositeService.java:119)

"AsyncDispatcher event handler" prio=5 tid=117084800 nid=0x115101000 in Object.wait() [115100000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <7a54cd298> (a org.apache.hadoop.yarn.service.CompositeService$CompositeServiceShutdownHook)
    at java.lang.Thread.join(Thread.java:1210)
    - locked <7a54cd298> (a org.apache.hadoop.yarn.service.CompositeService$CompositeServiceShutdownHook)
    at java.lang.Thread.join(Thread.java:1263)
    at java.lang.ApplicationShutdownHooks.runHooks(ApplicationShutdownHooks.java:79)
    at java.lang.ApplicationShutdownHooks$1.run(ApplicationShutdownHooks.java:24)
    at java.lang.Shutdown.runHooks(Shutdown.java:79)
    at java.lang.Shutdown.sequence(Shutdown.java:123)
    at java.lang.Shutdown.exit(Shutdown.java:168)
    - locked <7faf9cd00> (a java.lang.Class for java.lang.Shutdown)
    at java.lang.Runtime.exit(Runtime.java:90)
    at java.lang.System.exit(System.java:921)
    at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.sysexit(MRAppMaster.java:366)
    at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobFinishEventHandler.handle(MRAppMaster.java:415)
    at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobFinishEventHandler.handle(MRAppMaster.java:369)
    at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:123)
    at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:82)
    at java.lang.Thread.run(Thread.java:680)
{code}
                
> Lots of AMs hanging around in PIG testing
> -----------------------------------------
>
>                 Key: MAPREDUCE-3586
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3586
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mr-am, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Blocker
>             Fix For: 0.23.1
>
>
> [~daijy] found this. Here's what he says:
> bq. I see hundreds of MRAppMaster process on my machine, and lots of tests fail for "Too
many open files".

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