[jira] Assigned: (HADOOP-1060) Lost tasktracker leads to hung jobs

["Arun C Murthy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy reassigned HADOOP-1060:
-------------------------------------

    Assignee: Arun C Murthy

> Lost tasktracker leads to hung jobs
> -----------------------------------
>
>                 Key: HADOOP-1060
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1060
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.0
>            Reporter: Arun C Murthy
>         Assigned To: Arun C Murthy
>            Priority: Critical
>             Fix For: 0.12.1
>
>
> When the JobTracker detects that a TaskTracker is 'lost' and tries to fail the incomplete tasks and the completed map tasks it fails with:
> 2007-03-03 00:38:24,056 ERROR org.apache.hadoop.mapred.JobTracker: Tracker Expiry Thread got exception: java.lang.IndexOutOfBoundsException: Index: 310, Size: 307
>         at java.util.ArrayList.RangeCheck(ArrayList.java:546)
>         at java.util.ArrayList.get(ArrayList.java:321)
>         at org.apache.hadoop.mapred.JobInProgress.updateTaskStatus(JobInProgress.java:342)
>         at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:862)
>         at org.apache.hadoop.mapred.JobTracker.lostTaskTracker(JobTracker.java:1637)
>         at org.apache.hadoop.mapred.JobTracker$ExpireTrackers.run(JobTracker.java:269)
>         at java.lang.Thread.run(Thread.java:595)
> This means that the tasks aren't 'failed' correctly and the JT just assumes the task is running and never restarts the task... thereby leading to a hung job.

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