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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-11920) Refactor erasure coders and enhance the tests
Date Tue, 05 May 2015 10:39:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kai Zheng updated HADOOP-11920:
-------------------------------
    Attachment: HADOOP-11920-v1.patch

Provided a patch, refining some bit of codes and enhancing the tests for erasure coders. And
also removed the using of XOR coder in RS decoding, since as discussed in HADOOP-11874 it
was not efficient as would need more inputs.

> Refactor erasure coders and enhance the tests
> ---------------------------------------------
>
>                 Key: HADOOP-11920
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11920
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>         Attachments: HADOOP-11920-v1.patch
>
>
> While working on native erasure coders and also HADOOP-11847, it was found in some chances
better to refine a little bit of codes and enhance the tests for erasure coders. Cases:
> * Better to test if erasure coders can be repeatedly reused;
> * Better to test if erasure coders can be called with two buffer types (bytes array version
and direct bytebuffer version).



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