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Posted to hdfs-issues@hadoop.apache.org by "Andrew Wang (JIRA)" <ji...@apache.org> on 2017/01/18 23:00:28 UTC

[jira] [Updated] (HDFS-8415) Erasure coding: rotated parity placement (RAID5/6)

     [ https://issues.apache.org/jira/browse/HDFS-8415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wang updated HDFS-8415:
------------------------------
    Issue Type: New Feature  (was: Sub-task)
        Parent:     (was: HDFS-8031)

> Erasure coding: rotated parity placement (RAID5/6)
> --------------------------------------------------
>
>                 Key: HDFS-8415
>                 URL: https://issues.apache.org/jira/browse/HDFS-8415
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: erasure-coding
>            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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