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https://issues.apache.org/jira/browse/HBASE-9168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13734362#comment-13734362
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Ted Yu commented on HBASE-9168:
-------------------------------

HBASE-6796 'Backport HBASE-5547, Don't delete HFiles in backup mode' went into 
0.94.3
Meaning, earlier 0.94 releases wouldn't have .archive directory.

Looking at http://hbase.apache.org/book.html#upgrade0.96 , there is no 
mentioning of minimum 0.94 release from which user should upgrade from.
                
> TestMetaMigrationConvertingToPB fails on hadoop 2.0 due to 
> FileNotFoundException
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-9168
>                 URL: https://issues.apache.org/jira/browse/HBASE-9168
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 9168-v1.txt
>
>
> NamespaceUpgrade is called by TestMetaMigrationConvertingToPB
> TestMetaMigrationConvertToPB.tgz doesn't contain .archive directory.
> NamespaceUpgrade#migrateTables() calls listStatus() on .archive directory 
> (hardcoded)
> Due to change of behavior in hadoop 2.0, FileNotFoundException gets thrown 
> and makes the test fail.

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