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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10473) Allow only suitable storage policies to be set on striped files
Date Wed, 22 Jun 2016 00:45:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15343118#comment-15343118
] 

Uma Maheswara Rao G commented on HDFS-10473:
--------------------------------------------

I have just filed a JIRA for failures: HDFS-10555

> 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, HDFS-10473-02.patch, HDFS-10473-03.patch, HDFS-10473-04.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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