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From "Bryan Duxbury (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-18) [hbase] A sequence of create/delete/create/etc. generates 'info:regioninfo is empty; has keys:' and eventually fails
Date Wed, 13 Feb 2008 01:25:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12568395#action_12568395
] 

Bryan Duxbury commented on HBASE-18:
------------------------------------

Whenever we find a row like this, we should just immediately delete it. There's no way that
it will ever be salvaged. 

Moreover, if this is caused because of an admin concurrency issue, can we find some way to
make it non-concurrent? IE, is there a reason that we can't make creating and dropping tables
atomic and blocking? If you're deleting a 10TB table, I think you should be prepared to a
wait a few minutes in the shell. I'd much rather know it happened successfully than have it
exit quickly.

> [hbase] A sequence of create/delete/create/etc. generates 'info:regioninfo is empty;
has keys:' and eventually fails
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18
>                 URL: https://issues.apache.org/jira/browse/HBASE-18
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Priority: Minor
>         Attachments: hbase-dave-master-hendrix.log
>
>
> Marking as minor issue since its a concurrency issue in admin function.  Though that
said, this is a guaranteed way to generate rows in META that are without their regioninfo
(Looks like we might add startcode and servername after a row has had its regioninfo removed).
> Issue was found by Dave Simpson running a create/delete/create sequence.  Attaching log.

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