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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9603) Erasure Coding: Use ErasureCoder to encode/decode a block group
Date Mon, 04 Jan 2016 12:33:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15081090#comment-15081090
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Kai Zheng commented on HDFS-9603:
---------------------------------

Thanks Rui for the nice patch! 
For this util, {{public static RSErasureEncoder createRSEncoder}}, I understand it since we
only have one workable {{ErasureCoder}} for the moment. I guess we can hold on this to wait
for the HitchHicker coder to be available so try it here. Anyway, it should be {{public static
ErasureCoder createErasureEncoder}} or the similar and it should return a concrete erasure
coder according to configuration (not necessarily is the RS one).

A minor, please avoid star import.

> Erasure Coding: Use ErasureCoder to encode/decode a block group
> ---------------------------------------------------------------
>
>                 Key: HDFS-9603
>                 URL: https://issues.apache.org/jira/browse/HDFS-9603
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HDFS-9603.1.patch
>
>
> According to design, {{ErasureCoder}} is responsible to encode/decode a block group.
Currently however, we directly use {{RawErasureCoder}} to do the work, e.g. in {{DFSStripedOutputStream}}.
This task attempts to encapsulate {{RawErasureCoder}} to comply with the design.



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