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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7859) Erasure Coding: Persist erasure coding policies in NameNode
Date Mon, 18 Jan 2016 02:00:42 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15104056#comment-15104056
] 

Kai Zheng commented on HDFS-7859:
---------------------------------

Hello [~xinwei],

According to discussions in HDFS-7337 and related issues, and [Andrew's comment|https://issues.apache.org/jira/browse/HDFS-7337?focusedCommentId=14632005&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14632005],
we can proceed here to persist the erasure coding policies in NameNode image. Please let know
if any more inputs are needed here. Thanks.

> Erasure Coding: Persist erasure coding policies in NameNode
> -----------------------------------------------------------
>
>                 Key: HDFS-7859
>                 URL: https://issues.apache.org/jira/browse/HDFS-7859
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Xinwei Qin 
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-7859-HDFS-7285.002.patch, HDFS-7859-HDFS-7285.002.patch, HDFS-7859-HDFS-7285.003.patch,
HDFS-7859.001.patch, HDFS-7859.002.patch
>
>
> In meetup discussion with [~zhz] and [~jingzhao], it's suggested that we persist EC schemas
in NameNode centrally and reliably, so that EC zones can reference them by name efficiently.



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