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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1253) ConcurrentModificationException and NPE in JobControl
Date Tue, 17 Apr 2007 11:23:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12489365
] 

Hadoop QA commented on HADOOP-1253:
-----------------------------------

Integrated in Hadoop-Nightly #60 (See http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/60/)

> ConcurrentModificationException and NPE in JobControl
> -----------------------------------------------------
>
>                 Key: HADOOP-1253
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1253
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.3
>            Reporter: Johan Oskarson
>            Priority: Minor
>             Fix For: 0.13.0
>
>         Attachments: hadoop-jobcontrol-v2.patch
>
>
> toArrayList(Hashtable jobs) in JobControl.java isn't synchronized and it resulted in
a ConcurrentModificationException.
> checkRunningState in Job.java can throw a NullPointerException if running = jc.getJob(this.mapredJobID)
fails, leaving running null.

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