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https://issues.apache.org/jira/browse/HDFS-8020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14395115#comment-14395115
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Kai Zheng commented on HDFS-8020:
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bq.In a generic scenario, we might even construct both a raw data block and a
parity data blocks through the same command.
Right, I think so too.
bq.What 4 cases do you have in mind?
As I mentioned above, I mean the 4 cases as, (encoding, decoding) X (stripping
erasure coding, non-stripping erasure coding).
bq.I meant HDFS-7859...
See. We have someone working on that issue already. I agree this issue has to
depend on the fact that the schema info must be present in the related command.
> Erasure Coding: restore BlockGroup and schema info from stripping coding
> command
> --------------------------------------------------------------------------------
>
> Key: HDFS-8020
> URL: https://issues.apache.org/jira/browse/HDFS-8020
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Kai Sasaki
>
> As a task of HDFS-7344, to process *stripping* coding commands from NameNode
> or other scheduler services/tools, we need to first be able to restore
> BlockGroup and schema information in DataNode, which will be used to
> construct coding work.
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