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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9382) Track the acks for the packets which are sent from ErasureCodingWorker as part of reconstruction work
Date Mon, 16 Nov 2015 22:51:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15007553#comment-15007553
] 

Zhe Zhang commented on HDFS-9382:
---------------------------------

Great idea Uma. With this proposed work, we should probably revisit whether we should unify
block reader and writer for client and DN. I believe [~libo-intel] has explored the idea to
some extent.

> Track the acks for the packets which are sent from ErasureCodingWorker as part of reconstruction
work
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9382
>                 URL: https://issues.apache.org/jira/browse/HDFS-9382
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: 3.0.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>
> Currently we are not tracking the acks for the packets which are sent from DN ECWorker
as part of reconstruction work. This jira is proposing to tracks the acks as reconstruction
work is really expensive, so we should know if any packets failed to write at target DN 



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