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From "Kai Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12010) Inter-operable between Java RS erasure coder and native RS erasure coder
Date Thu, 21 May 2015 00:40:59 GMT
Kai Zheng created HADOOP-12010:
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             Summary: Inter-operable between Java RS erasure coder and native RS erasure coder
                 Key: HADOOP-12010
                 URL: https://issues.apache.org/jira/browse/HADOOP-12010
             Project: Hadoop Common
          Issue Type: Sub-task
            Reporter: Kai Zheng
            Assignee: Kai Zheng


It's natural and desired to support inter-operable between the two implemented RS raw erasure
coders, in other words, data encoded in one coder (like {{RSRawEncoder}} can be decoded using
the other coder (like {{NativeRSRawDecoder}}. Without this, raw erasure coder will not be
transparent to HDFS data. As such support isn't trivial and involves challenge work because
the two implementations use different encode/decode matrix generation algorithms, better to
have this separately.



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