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Posted to common-issues@hadoop.apache.org by "Kai Zheng (JIRA)" <ji...@apache.org> on 2015/04/23 07:45:38 UTC

[jira] [Created] (HADOOP-11871) Improve RSRawErasureDecoder avoiding unnecessary compuating and recovering

Kai Zheng created HADOOP-11871:
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             Summary: Improve RSRawErasureDecoder avoiding unnecessary compuating and recovering
                 Key: HADOOP-11871
                 URL: https://issues.apache.org/jira/browse/HADOOP-11871
             Project: Hadoop Common
          Issue Type: Sub-task
            Reporter: Kai Zheng
            Assignee: Kai Zheng


As discussed in HADOOP-11847, due to and inherited from the limitation of HDFS-RAID codes, {{RSErasureDecoder}} has to compute and recover unnecessarily some units even they're not really erased, but just not to read.
This is to resolve the limiation and improve {{RSErasureDecoder}} for better performance.



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