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https://issues.apache.org/jira/browse/HDFS-7866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186314#comment-15186314
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Rui Li commented on HDFS-7866:
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Thanks [~jingzhao] and [~zhz] for the great discussions. So we're good to leave
the field as required right?
I also checked the test failures and they cannot be reproduced locally.
> Erasure coding: NameNode manages multiple erasure coding policies
> -----------------------------------------------------------------
>
> Key: HDFS-7866
> URL: https://issues.apache.org/jira/browse/HDFS-7866
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Rui Li
> Attachments: HDFS-7866-v1.patch, HDFS-7866-v2.patch,
> HDFS-7866-v3.patch, HDFS-7866.10.patch, HDFS-7866.11.patch,
> HDFS-7866.12.patch, HDFS-7866.13.patch, HDFS-7866.4.patch, HDFS-7866.5.patch,
> HDFS-7866.6.patch, HDFS-7866.7.patch, HDFS-7866.8.patch, HDFS-7866.9.patch
>
>
> This is to extend NameNode to load, list and sync predefine EC schemas in
> authorized and controlled approach. The provided facilities will be used to
> implement DFSAdmin commands so admin can list available EC schemas, then
> could choose some of them for target EC zones.
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