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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7859) Erasure Coding: Persist erasure coding policies in NameNode
Date Fri, 15 Apr 2016 05:29:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15242464#comment-15242464
] 

Rakesh R commented on HDFS-7859:
--------------------------------

The proposed patch in this JIRA handles saving and loading the schema in fsimage/editlog.
IIUC, persistence is more necessary when we supports custom schemas, isn't it?. I could see
we are still discussing the ways to support HDFS-7337 and not yet reached a common agreement.
Do we have any plan to implement HDFS-7337?.

> 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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