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From "rajeshbabu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8348) Polish the migration to 0.96
Date Wed, 14 Aug 2013 16:07:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739813#comment-13739813
] 

rajeshbabu commented on HBASE-8348:
-----------------------------------

bq. So we clean up zk and hdfs first and then run the hfilev1 detector? Should the detector
run first?
I will change it. 
bq. Should we rename the hbase-cleanup.sh script to be called migrate.sh or upgrade.sh now
it does more than cleaning?
I will change it to upgrade.sh. And also we can have options like upgradeZk,updgradHdfs,updgradeAll
right? then if user sees any problems in zk, he can run upgrade with updradeZk option once
again. similarly with hdfs.



                
> Polish the migration to 0.96
> ----------------------------
>
>                 Key: HBASE-8348
>                 URL: https://issues.apache.org/jira/browse/HBASE-8348
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.0
>            Reporter: Jean-Daniel Cryans
>            Assignee: rajeshbabu
>            Priority: Critical
>             Fix For: 0.95.2
>
>         Attachments: HBASE-8348_trunk.patch, HBASE-8348_trunk_v2.patch, HBASE-8348_trunk_v3.patch
>
>
> Currently, migration works but there's still a couple of rough edges:
>  - HBASE-8045 finished the .META. migration but didn't remove ROOT, so it's still on
the filesystem.
>  - Data in ZK needs to be removed manually. Either we fix up the data in ZK or we delete
it ourselves.
>  - TestMetaMigrationRemovingHTD has a testMetaUpdatedFlagInROOT method, but ROOT is gone
now.
> Elliott was also mentioning that we could have "hbase migrate" do the HFileV1 checks,
clear ZK, remove ROOT, etc.

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