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https://issues.apache.org/jira/browse/HDFS-10473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15320085#comment-15320085
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Jing Zhao commented on HDFS-10473:
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Thanks for the reply, Uma! My main concern is the change proposed here brings
extra complexity to NN and also is inconsistent. The inconsistency lies between
files v.s. directories, online (i.e., during file creation) v.s. offline (after
file gets created). Also, do you see any critical issue if an admin really sets
WARM/ONE_SSD policy to EC files?
> Allow only suitable storage policies to be set on striped files
> ---------------------------------------------------------------
>
> Key: HDFS-10473
> URL: https://issues.apache.org/jira/browse/HDFS-10473
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Attachments: HDFS-10473-01.patch
>
>
> Currently some of existing storage policies are not suitable for striped
> layout files.
> This JIRA proposes to reject setting storage policy on striped files.
> Another thought is to allow only suitable storage polices like ALL_SSD.
> Since the major use case of EC is for cold data, this may not be at high
> importance. So, I am ok to reject setting storage policy on striped files at
> this stage. Please suggest if others have some thoughts on this.
> Thanks [~zhz] for offline discussion on this.
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