hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-969) deadlock in job tracker RetireJobs
Date Fri, 02 Feb 2007 20:09:05 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-969:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this.  Thanks, Owen!

> deadlock in job tracker RetireJobs
> ----------------------------------
>
>                 Key: HADOOP-969
>                 URL: https://issues.apache.org/jira/browse/HADOOP-969
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Owen O'Malley
>         Assigned To: Owen O'Malley
>            Priority: Critical
>             Fix For: 0.11.0
>
>         Attachments: jt-dead.patch
>
>
> The JobTracker deadlocks because RetireJobs grabs locks in the wrong order. The call
stacks look like:
> "IPC Server handler 5 on 50020":
>        at org.apache.hadoop.mapred.JobTracker.getNewTaskForTaskTracker(JobTracker.java:1108)
>        - waiting to lock <0x74487a80> (a java.util.Vector)
>        - locked <0x744874b0> (a org.apache.hadoop.mapred.JobTracker)
>        at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:992)
>        - locked <0x744874b0> (a org.apache.hadoop.mapred.JobTracker)
>        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:585)
>        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:337)
>        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:538)
> "retireJobs":
>        at org.apache.hadoop.mapred.JobTracker.removeJobTasks(JobTracker.java:782)
>        - waiting to lock <0x744874b0> (a org.apache.hadoop.mapred.JobTracker)
>        at org.apache.hadoop.mapred.JobTracker.access$300(JobTracker.java:42)
>        at org.apache.hadoop.mapred.JobTracker$RetireJobs.run(JobTracker.java:312)
>        - locked <0x74487bb0> (a java.util.ArrayList)
>        - locked <0x74487a80> (a java.util.Vector)
>        - locked <0x74487a58> (a java.util.TreeMap)
>        at java.lang.Thread.run(Thread.java:595)
> Found 1 deadlock.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message