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https://issues.apache.org/jira/browse/HDFS-8014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14503657#comment-14503657
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Zhe Zhang commented on HDFS-8014:
---------------------------------
Thanks for checking Nicholas. _Block reader_ here actually means block reading
logic in general, not the {{BlockReader}} class. In particular, I think we
should create something similar to the current {{DataNode#DataTransfer}}, but
pulls data instead of pushing. I uploaded a rough [prototype |
https://issues.apache.org/jira/secure/attachment/12723787/ECWorker.java] under
HDFS-7348 and will resume work on this JIRA once we agree on the overall
direction.
> Erasure Coding: local and remote block reader for coding work in DataNode
> -------------------------------------------------------------------------
>
> Key: HDFS-8014
> URL: https://issues.apache.org/jira/browse/HDFS-8014
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Zhe Zhang
>
> As a task of HDFS-7344 ECWorker, in either stripping or non-stripping erasure
> coding, to perform encoding or decoding, we need first to be able to read
> locally or remotely data blocks. This is to come up block reader facility in
> DataNode side. Better to think about the similar work done in client side, so
> in future it's possible to unify the both.
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