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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8171) Extend BlockSender to support multiple block data source
Date Fri, 17 Apr 2015 17:04:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14500197#comment-14500197

Zhe Zhang commented on HDFS-8171:

Moving this to HDFS-8031; if necessary we can move it back. [~libo-intel] if you already have
partial patch or design, please post here so we can resume the work later.

> 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

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