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Date: Tue, 13 Aug 2013 18:30:53 +0000 (UTC)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12663341.1376359439064.57476.1376418653144@arcas>
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References: <JIRA.12663341.1376359439064@arcas>
Subject: [jira] [Commented] (HDFS-5089) When a LayoutVersion support
 SNAPSHOT, it must support FSIMAGE_NAME_OPTIMIZATION.
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    [ https://issues.apache.org/jira/browse/HDFS-5089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738616#comment-13738616 ] 

Todd Lipcon commented on HDFS-5089:
-----------------------------------

Why does RESERVED_REL_1_3_0 support SNAPSHOT? I haven't seen any discussion about backporting snapshots to branch-1, and I'd be pretty strongly against it. Maybe this should be a discussion on the dev list?
                
> When a LayoutVersion support SNAPSHOT, it must support FSIMAGE_NAME_OPTIMIZATION.
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-5089
>                 URL: https://issues.apache.org/jira/browse/HDFS-5089
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h5089_20130813.patch
>
>
> The SNAPSHOT layout requires FSIMAGE_NAME_OPTIMIZATION as a prerequisite.  However, RESERVED_REL1_3_0 supports SNAPSHOT but not FSIMAGE_NAME_OPTIMIZATION.

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