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https://issues.apache.org/jira/browse/HDFS-7859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16005479#comment-16005479
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Kai Zheng commented on HDFS-7859:
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As there are particular interests and requirements to support more codecs and
coders, like in HDFS-11503; and we received user queries regarding how to try
their own EC policies like using different cell size. So accordingly we want to
solve this and make a further step in HDFS-7337 to support pluggable and
configurable codecs. The design doc was updated with latest discussions and
related work, which I hope can address the design level questions that's
already raised or will be raised here.
[~szetszwo], per your request this should be proceeded with design since it's
to change the fsimage, which is why I want to ping you. Would you let me know
if you have any concerns or would confirm. I know you're very busy with Ozone,
so thanks for your time :)!
> 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
> 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-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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