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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-8415) Erasure coding: rotated parity placement (RAID5/6)
Date Fri, 15 May 2015 17:00:10 GMT
Zhe Zhang created HDFS-8415:
-------------------------------

             Summary: Erasure coding: rotated parity placement (RAID5/6)
                 Key: HDFS-8415
                 URL: https://issues.apache.org/jira/browse/HDFS-8415
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Zhe Zhang
            Assignee: Zhe Zhang


Our current implementation uses fixed internal blocks for parity data, similar to RAID3. Rotated
parity placement like RAID5/6 has interesting tradeoffs that we should investigate.



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