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https://issues.apache.org/jira/browse/HADOOP-893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12470394
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Raghu Angadi commented on HADOOP-893:
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I am planning to do manual test of various cases including the case where all
the nodes are unresponsive. I will look into how we can shutdown nodes in
MiniDFSCluster.
Yes, it does change the randomization behavior from earlier. This is one of the
changes from existing code.
> dead datanode set should be maintained in the file handle or file system for
> hdfs
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-893
> URL: https://issues.apache.org/jira/browse/HADOOP-893
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Reporter: Owen O'Malley
> Assigned To: Raghu Angadi
> Attachments: HADOOP-893-1.patch, HADOOP-893-2.patch
>
>
> Currently each call to read is creating a new set of dead datanodes. It seems
> like it would be more useful to keep a set of dead datanodes at either the
> file handle or file system level since dead datanodes are probably not quite
> that transient.
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