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https://issues.apache.org/jira/browse/HBASE-743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614911#action_12614911
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Izaak Rubin commented on HBASE-743:
-----------------------------------
I've updated the HBase Wiki page on migrations, mentioning the issue of
unrecovered redo logs:
http://wiki.apache.org/hadoop/Hbase/HowToMigrate
I'm not sure if there's a way for HBase to go through and merge-in these redo
logs - if so, I'll post it to the migration page as well. If something like
this doesn't exist, it might be a good idea to make it.
> 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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