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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-510) HConnectionManger.listTables returns empty list if exception (though there may be many tables present)
Date Fri, 14 Mar 2008 03:33:24 GMT

    [ https://issues.apache.org/jira/browse/HBASE-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12578583#action_12578583
] 

stack commented on HBASE-510:
-----------------------------

+1 Ran tests on branch and passed.  Reviewed both patches.  Look fine.

> HConnectionManger.listTables returns empty list if exception (though there may be many
tables present)
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-510
>                 URL: https://issues.apache.org/jira/browse/HBASE-510
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.1.0, 0.2.0, 0.16.0
>            Reporter: stack
>            Assignee: Bryan Duxbury
>            Priority: Minor
>             Fix For: 0.1.0
>
>         Attachments: 510-0.1.patch, 510-trunk.patch
>
>
> Its a problem because commonly a check for existence will get list of current tables.
> Yesterday saw problem when .META. went off line.  A piece of client code was asking for
list of tables when .META. was offline, it was getting back an empty list because listTables
do while was seeing 'org.apache.hadoop.hbase.NotServingRegionException: .META.,,1'
> Problem is the do while in HCM.listTables goes as long as startRow does not equal LAST_ROW
but startRow is initialized with EMPTY_START_ROW which is equal to LAST_ROW.

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