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Date: Thu, 14 Apr 2011 17:29:07 +0000 (UTC)
From: "Tsz Wo (Nicholas), SZE (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-1822) Editlog opcodes overlap between 20
 security and later releases
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    [ https://issues.apache.org/jira/browse/HDFS-1822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019929#comment-13019929 ] 

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

I also think that Konstantin's proposal is reasonable.  The only drawback is requiring an extra upgrade.

> 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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