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https://issues.apache.org/jira/browse/HDFS-7839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kai Zheng updated HDFS-7839:
----------------------------
Description:
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.
was: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.
> 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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