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https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xinwei Qin updated HDFS-7859:
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Comment: was deleted
(was: Hi, [~zhz]
I have updated the patch. About your comments, I have fixed 1, 2, 5, 6, 7.
About 3 and 4, I think the current method name and usage may be more suitable,
because {{addErasureCodingPolicy}} always does not need lock the
{{FSDirectory}}, which is similar to the {{addCacheDirective}}.)
> 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, hdfs-ec-3.0-must-do
> 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, HDFS-7859.004.patch,
> HDFS-7859.005.patch, HDFS-7859.006.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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