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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10916) Switch from "raw" to "system" xattr namespace for erasure coding policy
Date Tue, 11 Oct 2016 21:15:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15566630#comment-15566630
] 

Andrew Wang commented on HDFS-10916:
------------------------------------

Thanks Eddy for review and commit!

> Switch from "raw" to "system" xattr namespace for erasure coding policy
> -----------------------------------------------------------------------
>
>                 Key: HDFS-10916
>                 URL: https://issues.apache.org/jira/browse/HDFS-10916
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-10916.001.patch
>
>
> Currently EC policy is stored as in the raw xattr namespace. It would be better to store
this in "system" like storage policy.
> Raw is meant for attributes which need to be preserved across a distcp, like encryption
info. EC policy is more similar to replication factor or storage policy, which can differ
between the src and target of a distcp. 



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