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https://issues.apache.org/jira/browse/HDFS-7653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14289772#comment-14289772
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Tsz Wo Nicholas Sze commented on HDFS-7653:
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Sound good. Thanks!
> Block Readers and Writers used in both client side and datanode side
> --------------------------------------------------------------------
>
> Key: HDFS-7653
> URL: https://issues.apache.org/jira/browse/HDFS-7653
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Li Bo
> Assignee: Li Bo
> Attachments: BlockReadersWriters.patch
>
>
> There're a lot of block read/write operations in HDFS-EC, for example, when
> client writes a file in striping layout, client has to write several blocks
> to several different datanodes; if a datanode wants to do an
> encoding/decoding task, it has to read several blocks from itself and other
> datanodes, and writes one or more blocks to itself or other datanodes.
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