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https://issues.apache.org/jira/browse/HBASE-8348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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rajeshbabu updated HBASE-8348:
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Attachment: HBASE-8348-approach-3.patch
This is really superb Himanshu.
Only thing missing is checking for no live processes exist before upgrade.In
current patch I have added that check and skipping upgrade if any live
processes exists. Tested in the cluster. Its fine as well.
Removed TestMetaMigrationRemovingHTD#testMetaUpdatedFlagInROOT test.
The reason for TestUpgradeTo96#testHFileV1Detector failure is because
RootKeyComparator class not exists so not able deserialize trailer propery. It
got removed recently as part of HBASE-9196(Remove dead code related to KeyValue)
We need to add it back or skip root table hfile v1 check.
> 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: 0.96.0
>
> Attachments: HBASE-8348-approach-2.patch,
> HBASE-8348-approach-3.patch, 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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