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https://issues.apache.org/jira/browse/HBASE-8251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13624304#comment-13624304
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Jeffrey Zhong commented on HBASE-8251:
--------------------------------------
[~zjushch] Thanks for the very good question!
{quote}
How about if ROOT and META are on the same regionserver?
{quote}
I handled this in MetaSSH, you can check details in the patch of hbase-7828(I
pasted the related code below). It basically wait for master meta assignment
done then handle a deadButNotExpired Meta RS.
{code}
+ if(!this.services.isServerShutdownHandlerEnabled()) {
+ // resubmit in case we're in master initialization and SSH hasn't been
enabled yet.
+ this.services.getExecutorService().submit(this);
+ this.deadServers.add(serverName);
+ }
{code}
> enable SSH before assign META on Master startup
> -----------------------------------------------
>
> Key: HBASE-8251
> URL: https://issues.apache.org/jira/browse/HBASE-8251
> Project: HBase
> Issue Type: Bug
> Components: master, Region Assignment
> Affects Versions: 0.94.6
> Reporter: Jieshan Bean
> Assignee: Jieshan Bean
> Attachments: HBASE-8251-94.patch
>
>
> I think HBASE-5918 could not fix this issue. In HMaster#assignRootAndMeta:
> 1. Assign ROOT.
> 2. Block until ROOT be opened.
> 3. Assign META.
> 4. Block until META be opened.
> SSH is enabled after step 4. So if the RS who host ROOT dies before step 4,
> master will be blocked.
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