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https://issues.apache.org/jira/browse/HDFS-7839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14340937#comment-14340937
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Kai Zheng commented on HDFS-7839:
---------------------------------
To better reflect what's been doing here in the patch, sync and align this with
HDFS-7349, I adjusted the title and description, so this will focus on the
NameNode side facilities, HDFS-7349 will focus on the client side. Hope this
works.
> Erasure coding: implement facilities in NameNode to create and manage EC zones
> ------------------------------------------------------------------------------
>
> Key: HDFS-7839
> URL: https://issues.apache.org/jira/browse/HDFS-7839
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-7839-000.patch, HDFS-7839-001.patch
>
>
> As a quick first step to facilitate initial development and testing,
> HDFS-7347 added EC configuration in file header as one storage policy. We
> have discussed and [concluded
> |https://issues.apache.org/jira/browse/HDFS-7285?focusedCommentId=14296210&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14296210]
> that EC configurations should be part of XAttr. This JIRA aims to add the
> basic EC XAttr structure. HDFS-7337 will add configurable and pluggable
> schema info.
> To summarize, this will focus on providing relevant facilities in NameNode
> side to create and manage EC zones. EC zone will associate, reference and
> store the needed schema name as XAttr. EC schema information will be
> persisted in NameNode elsewhere centrally.
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