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Date: Fri, 18 Jul 2008 09:36:32 -0700 (PDT)
From: "Izaak Rubin (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-743) bin/hbase migrate upgrade fails when
 redo logs exists
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    [ https://issues.apache.org/jira/browse/HBASE-743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614779#action_12614779 ] 

Izaak Rubin commented on HBASE-743:
-----------------------------------

I see, that makes sense.  I'm not sure that this is necessarily a problem with the migrate command, although I suppose it could be a bit more tolerant.  I'll ask Jim or Stack about this.

Still, I think the right thing to do would be to just warn people about this before they migrate, and point them to the directory where any redo logs might be hanging around.  I'll make a note of this on the wiki page.

> bin/hbase migrate upgrade fails when redo logs exists
> -----------------------------------------------------
>
>                 Key: HBASE-743
>                 URL: https://issues.apache.org/jira/browse/HBASE-743
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.2.0
>            Reporter: Sebastien Rainville
>            Assignee: Izaak Rubin
>            Priority: Minor
>
> I migrated several hbase-0.1.3 instances to hbase trunk and even if I stop hbase-0.1.3 cleanup it leaves redo logs on hdfs. The problems is that when migrating the data with hbase-trunk it fails because it finds these redo-logs and quit with a error message saying that we should reinstall the old hbase and shut it down cleanly and that in theory it erases the redo logs. The work around has been to delete the redo logs manually... which is bad.

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