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https://issues.apache.org/jira/browse/HBASE-11531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065129#comment-14065129
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Jimmy Xiang commented on HBASE-11531:
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bq. I set hbase.assignment.usezk = true and
hbase.assignment.usezk.migrating=true
So you are trying to migrate from usezk = true to usezk = false. In the second
phase of the migration, you'd better restart the master at the end, not in the
middle.
bq. Timedout waiting for namespace table to be assigned
The namespace table is in transition before you restarted the master? It's fine
for namespace table to be timed-out. SSH should fix it later.
bq. Somehow the master UI also doesn't show up.
Are you running branch-1/master code? If so, the master UI should show up
really quick now, even before meta is assigned.
bq. I thought the region state should change from PENDING_OPEN to OPEN as the
region is actually online.
In this case, the region state can be better. But this is ok (applications can
still locate the region and access it). This mismatch is in-mem and transient.
It happens only during the migration. After the region server is
restarted/migrated, the state will be fixed by SSH.
> RegionStates for regions under region-in-transition znode are not updated on
> startup
> ------------------------------------------------------------------------------------
>
> Key: HBASE-11531
> URL: https://issues.apache.org/jira/browse/HBASE-11531
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Affects Versions: 0.99.0
> Reporter: Virag Kothari
> Attachments: sample.patch
>
>
> While testing HBASE-11059, saw that if there are regions under
> region-in-transition znode their states are not updated in META and master
> memory on startup.
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