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