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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13665) Erasure Coding codec should support fallback coder
Date Tue, 11 Apr 2017 13:45:41 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964383#comment-15964383
] 

Wei-Chiu Chuang commented on HADOOP-13665:
------------------------------------------

+1 test failure is unrelated. Will commit soon.

> Erasure Coding codec should support fallback coder
> --------------------------------------------------
>
>                 Key: HADOOP-13665
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13665
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io
>            Reporter: Wei-Chiu Chuang
>            Assignee: Kai Sasaki
>            Priority: Blocker
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HADOOP-13665.01.patch, HADOOP-13665.02.patch, HADOOP-13665.03.patch,
HADOOP-13665.04.patch, HADOOP-13665.05.patch, HADOOP-13665.06.patch, HADOOP-13665.07.patch,
HADOOP-13665.08.patch, HADOOP-13665.09.patch, HADOOP-13665.10.patch, HADOOP-13665.11.patch,
HADOOP-13665.12.patch
>
>
> The current EC codec supports a single coder only (by default pure Java implementation).
If the native coder is specified but is unavailable, it should fallback to pure Java implementation.
> One possible solution is to follow the convention of existing Hadoop native codec, such
as transport encryption (see {{CryptoCodec.java}}). It supports fallback by specifying two
or multiple coders as the value of property, and loads coders in order.



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