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https://issues.apache.org/jira/browse/MAPREDUCE-6578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434646#comment-15434646
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SammiChen commented on MAPREDUCE-6578:
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Thanks Kai's suggestion. If the user input {{storagePolicy}} parameter is
incorrect or invalid, it's better provide user the knowledge that what's are
current supported storage policy list.
Update the patch based on above thoughts.
> Add support for HDFS heterogeneous storage testing to TestDFSIO
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-6578
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6578
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Wei Zhou
> Assignee: Wei Zhou
> Attachments: MAPREDUCE-6578.00.patch, MAPREDUCE-6578.01.patch,
> MAPREDUCE-6578.02.patch, MAPREDUCE-6578.03.patch
>
>
> HDFS heterogeneous storage allows user to store data blocks to different
> storage medias according to predefined storage policies. Only 'Default'
> policy is supported in current TestDFSIO implementation. This is going to add
> an new option to enable tests of other storage polices.
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