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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 21:23:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747902#comment-13747902
] 

Himanshu Vashishtha commented on HBASE-8348:
--------------------------------------------

Thanks for reviewing.

The last patch takes care of the comments mentioned by Stack. 

1) I attached a usage log (log-2), which list sample commands with their output. It covers
basic use case (list help, run check, execute update with HBase process running, with HDFS
down, etc). It has one use where there are two HFileV1 and one corrupt file (case #4).

2) HFileV1 Tool is working again (it no longer uses FixedFileTrailer instance, so no regression
from 9126).

3) Removed ns/zk options. Checked that after one run, they are noop.
                
> 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-2-v2.4.patch, HBASE-8348-approach-3.patch,
HBASE-8348_trunk.patch, HBASE-8348_trunk_v2.patch, HBASE-8348_trunk_v3.patch, log, log-2
>
>
> 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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