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https://issues.apache.org/jira/browse/HDFS-3527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13395962#comment-13395962
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Robert Joseph Evans commented on HDFS-3527:
-------------------------------------------
Just guessing here from the name of the JIRA, but a Distributed cache object
changed error typically happens when the file on HDFS changes in-between the
submission of a job and a container being launched that is going to download
the file. It sounds to me like it may be a test error where you a submitting
lots of jobs and changing an object in HDFS in between them that is shared by
all of the jobs. I cannot be sure without more information though.
> Distributed cache object changed Error
> --------------------------------------
>
> Key: HDFS-3527
> URL: https://issues.apache.org/jira/browse/HDFS-3527
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.0.0-alpha
> Reporter: Sujay Rau
>
> I'm writing some automation test code that basically runs the teragen,
> terasort, teravalidate sequence while repeatedly doing a manual failover
> throughout. About every fourth time I run the test script, the terasort phase
> crashes and returns the following error:
> http://c0405.hal.cloudera.com:50030/jobtasks.jsp?jobid=job_201206041130_1482&type=setup&pagenum=1&state=killed.
>
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