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Date: Tue, 14 Jun 2016 21:01:30 +0000 (UTC)
From: "Arpit Agarwal (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12974456.1464762488000.936.1465938090141@Atlassian.JIRA>
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References: <JIRA.12974456.1464762488000@Atlassian.JIRA> <JIRA.12974456.1464762488082@arcas>
Subject: [jira] [Commented] (HDFS-10473) Allow only suitable storage
 policies to be set on striped files
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archived-at: Tue, 14 Jun 2016 21:01:37 -0000


    [ https://issues.apache.org/jira/browse/HDFS-10473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15330587#comment-15330587 ] 

Arpit Agarwal commented on HDFS-10473:
--------------------------------------

Hi [~zhz], [~umamaheswararao],

Can you please hold off committing this patch? I would like to take a look at it by tomorrow.

> 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
>
>
> 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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