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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1822) Editlog opcodes overlap between 20 security and later releases
Date Wed, 20 Apr 2011 15:38:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022177#comment-13022177
] 

Suresh Srinivas commented on HDFS-1822:
---------------------------------------

> Doesn't seem like this "keeps branch-specific hackery confined to the branch".
It does. We no longer need code for conflicting opcodes in later releases. The new check that
is being added is for version compatibility.

> 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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