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https://issues.apache.org/jira/browse/HBASE-24286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17162302#comment-17162302
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Tak-Lon (Stephen) Wu commented on HBASE-24286:
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[PR#2114|https://github.com/apache/hbase/pull/2114] is for the master branch
> HMaster won't become healthy after after cloning or creating a new cluster
> pointing at the same file system
> -----------------------------------------------------------------------------------------------------------
>
> Key: HBASE-24286
> URL: https://issues.apache.org/jira/browse/HBASE-24286
> Project: HBase
> Issue Type: Bug
> Components: master, Region Assignment
> Affects Versions: 3.0.0-alpha-1, 2.2.3, 2.2.4, 2.2.5
> Reporter: Jack Ye
> Assignee: Tak-Lon (Stephen) Wu
> Priority: Major
>
> h1. How to reproduce:
> # user starts an HBase cluster on top of a file system
> # user performs some operations and shuts down the cluster, all the data are
> still persisted in the file system
> # user creates a new HBase cluster using a different set of servers on top
> of the same file system with the same root directory
> # HMaster cannot initialize
> h1. Root cause:
> During HMaster initialization phase, the following happens:
> # HMaster waits for namespace table online
> # AssignmentManager gets all namespace table regions info
> # region servers of namespace table are already dead, online check fails
> # HMaster waits for namespace regions online, keep retrying for 1000 times
> which means forever
> Code waiting for namespace table to be online:
> https://github.com/apache/hbase/blob/rel/2.2.3/hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java#L1102
> h1. Stack trace (running on S3):
> 2020-04-23 08:15:57,185 WARN [master/ip-10-12-13-14:16000:becomeActiveMaster]
> master.HMaster:
> hbase:namespace,,1587628169070.d34b65b91a52644ed3e77c5fbb065c2b. is NOT
> online; state=\{d34b65b91a52644ed3e77c5fbb065c2b state=OPEN,
> ts=1587629742129, server=ip-10-12-13-14.ec2.internal,16020,1587628031614};
> ServerCrashProcedures=false. Master startup cannot progress, in
> holding-pattern until region onlined.
> where ip-10-12-13-14.ec2.internal is the old region server hosting the region
> of hbase:namespace.
> h1. Discussion for the fix
> We see there is a fix for this at branch-3:
> https://issues.apache.org/jira/browse/HBASE-21154. Before we provide a patch,
> we would like to know from the community if we should backport this change to
> branch-2, or if we should just perform a fix with minimum code change.
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