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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13665) Erasure Coding codec should support fallback coder
Date Tue, 27 Sep 2016 17:32:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei-Chiu Chuang updated HADOOP-13665:
-------------------------------------
    Issue Type: Sub-task  (was: Improvement)
        Parent: HADOOP-11842

> 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
>
> I think EC issues should be reported in HDFS, but the code lands in Hadoop Common anyway.
> 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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