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From "Himanshu Vashishtha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8348) Polish the migration to 0.96
Date Thu, 22 Aug 2013 17:17:53 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747670#comment-13747670
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Himanshu Vashishtha commented on HBASE-8348:
--------------------------------------------

Thanks for reviewing Stack.

Pretty sure this failure is not related. Its fails on a 2 sec timeout (passes on local).

Re: Help, I thought we said to add more details in the ref guide. In case user give both option
and check fails, it will not go to the execute part.

bq. You can override the usage that is output by Option, IIRC?
Let me take a look on that. 

bq.  if v1 check does not work, it should not be included here:
We need that and I will upload a fix for 9297 soon.

Re zk down:
If zk is down, the upgradeZnodes part throws exception to the user. I posted that as a requirement
in the first Sample Help ("As we need to update znodes, ensure that zookeeper is up and running.")

bq. Yes, re-running them is a noop. Okay, will remove ns and zk option. Thanks.
                
> 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: Blocker
>             Fix For: 0.96.0
>
>         Attachments: HBASE-8348-approach-2.patch, HBASE-8348-approach-2-v2.1.patch, HBASE-8348-approach-2-v2.2.patch,
HBASE-8348-approach-2-v2.3.patch, HBASE-8348-approach-3.patch, HBASE-8348_trunk.patch, HBASE-8348_trunk_v2.patch,
HBASE-8348_trunk_v3.patch, log
>
>
> 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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