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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13010) Refactor raw erasure coders
Date Tue, 24 May 2016 22:02:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15299016#comment-15299016
] 

Kai Zheng commented on HADOOP-13010:
------------------------------------

Thanks [~cmccabe] for your time driving this and talking to me. It's very helpful and I'm
glad you'd like the latest patch. Just opened HADOOP-13200 to address the follow-on task.
I will copy the relevant comments to there for us to resume the discussion later. Note the
latest patch fixed the issue you mentioned and could you help trigger the Jenkins if convenient?

Thanks again.

> Refactor raw erasure coders
> ---------------------------
>
>                 Key: HADOOP-13010
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13010
>             Project: Hadoop Common
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>         Attachments: HADOOP-13010-v1.patch, HADOOP-13010-v2.patch, HADOOP-13010-v3.patch,
HADOOP-13010-v4.patch, HADOOP-13010-v5.patch, HADOOP-13010-v6.patch, HADOOP-13010-v7.patch
>
>
> This will refactor raw erasure coders according to some comments received so far.
> * As discussed in HADOOP-11540 and suggested by [~cmccabe], better not to rely class
inheritance to reuse the codes, instead they can be moved to some utility.
> * Suggested by [~jingzhao] somewhere quite some time ago, better to have a state holder
to keep some checking results for later reuse during an encode/decode call.
> This would not get rid of some inheritance levels as doing so isn't clear yet for the
moment and also incurs big impact. I do wish the end result by this refactoring will make
all the levels more clear and easier to follow.



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