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https://issues.apache.org/jira/browse/MAPREDUCE-6578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434072#comment-15434072
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Kai Zheng commented on MAPREDUCE-6578:
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Thanks [~zhouwei] for the work and [~Sammi] for the update.
It's a good idea to support the {{storagePolicy}} option to test with some
storage policy. The patch looks good overall. One comment is, could we print in
the usage the list of all the supported policies? Otherwise it's hard for user
to use the option.
> 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
>
>
> 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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