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https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160631#comment-16160631
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Kai Zheng commented on HDFS-7859:
---------------------------------
Thanks Sammi for the update and great work. In addition to the off-line
discussion points regarding how to move on this:
bq. There are existing "CacheManagerSection" saves cache directives for
CacheManager, "SecretManagerSection" saves secrets for SecretManager. So its
better follow the style, use "ErasureCodingPolicyManagerSection" to save the EC
policies for ErasureCodingPolicyManager.
Good point. However, if you'd like to see all the existing sections, you can
see all are concise and not so verbose. For the fsimage definition, the brevity
should make sense unless it introduces ambiguity. I'd prefer to do the change
{{ErasureCodingPolicyManagerSection}} => {{ErasureCodingSection}} along with
related methods (even more lengthy).
> 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: SammiChen
> Labels: hdfs-ec-3.0-must-do
> Attachments: HDFS-7859.001.patch, HDFS-7859.002.patch,
> HDFS-7859.004.patch, HDFS-7859.005.patch, HDFS-7859.006.patch,
> HDFS-7859.007.patch, HDFS-7859.008.patch, HDFS-7859.009.patch,
> HDFS-7859.010.patch, HDFS-7859.011.patch, HDFS-7859.012.patch,
> HDFS-7859.013.patch, HDFS-7859.014.patch, HDFS-7859.015.patch,
> HDFS-7859.016.patch, HDFS-7859-HDFS-7285.002.patch,
> HDFS-7859-HDFS-7285.002.patch, HDFS-7859-HDFS-7285.003.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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