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https://issues.apache.org/jira/browse/HDFS-8619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597211#comment-14597211
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Jing Zhao commented on HDFS-8619:
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bq. Hopefully also to split it to functional pieces like "Support EC zones",
"Allocate and persist striped blocks in NameNode", ""Add striped block support
in INodeFile.".
Yeah, this makes sense to me. Please let me know if you need any help on either
development or code review.
> Erasure Coding: revisit replica counting for striped blocks
> -----------------------------------------------------------
>
> Key: HDFS-8619
> URL: https://issues.apache.org/jira/browse/HDFS-8619
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-8619.000.patch
>
>
> Currently we use the same {{BlockManager#countNodes}} method for striped
> blocks, which simply treat each internal block as a replica. However, for a
> striped block, we may have more complicated scenario, e.g., we have multiple
> replicas of the first internal block while we miss some other internal
> blocks. Using the current {{countNodes}} methods can lead to wrong decision
> in these scenarios.
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