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https://issues.apache.org/jira/browse/HDFS-8171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14500195#comment-14500195
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Zhe Zhang commented on HDFS-8171:
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Looks like we can do this as a follow-on? If multiple blocks fail (a rare
case), how about we just send them to destinations 1 by 1 at this stage?
> Extend BlockSender to support multiple block data source
> --------------------------------------------------------
>
> Key: HDFS-8171
> URL: https://issues.apache.org/jira/browse/HDFS-8171
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Li Bo
> Assignee: Li Bo
>
> Currently BlockSender reads a block from the disk and sends it to a remote
> datanode. In EC encode/decode work, new blocks are generated by calculation.
> In order to store these blocks to remote datanodes, we can ask BlockSender to
> read data from the output of encode/decode calculation.
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