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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1822) Editlog opcodes overlap between 20 security and later releases
Date Wed, 13 Apr 2011 22:22:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019579#comment-13019579
] 

Tsz Wo (Nicholas), SZE commented on HDFS-1822:
----------------------------------------------

> You can't have it both ways. If new software understands the old opcodes that essentially
declares them stable.

Allen, it seems to me that you do not understand the existing implementation although you
have -1'ed on this.  I am sorry to see it.

> Editlog opcodes overlap between 20 security and later releases
> --------------------------------------------------------------
>
>                 Key: HDFS-1822
>                 URL: https://issues.apache.org/jira/browse/HDFS-1822
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0, 0.22.0, 0.23.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>            Priority: Blocker
>             Fix For: 0.22.0, 0.23.0
>
>         Attachments: HDFS-1822.patch
>
>
> Same opcode are used for different operations between 0.20.security, 0.22 and 0.23. This
results in failure to load editlogs on later release, especially during upgrades.

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