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https://issues.apache.org/jira/browse/HBASE-7824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13624583#comment-13624583
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Jeffrey Zhong commented on HBASE-7824:
--------------------------------------
[~zjushch] The patch already covered the case you mentioned. You can check both
v7 & v8 patch. The reason I don't mention the scenario in the above suggestion
is to make the idea easier to be accepted.
Yesterday I replied you on hbase-8251 for ROOT & META collocating on one RS
scenario. You can check details at MetaSSH in the patch. Basically we only
recover ROOT portion and leave META part till master meta assignment completes.
Below is related pseudo code snippet, please let me know if you have more
questions. Thanks.
{code}
...
re-assign root
...
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);
return;
}
...
re-assign meta
...
{code}
> Improve master start up time when there is log splitting work
> -------------------------------------------------------------
>
> Key: HBASE-7824
> URL: https://issues.apache.org/jira/browse/HBASE-7824
> Project: HBase
> Issue Type: Bug
> Components: master
> Reporter: Jeffrey Zhong
> Assignee: Jeffrey Zhong
> Fix For: 0.94.8
>
> Attachments: hbase-7824.patch, hbase-7824_v2.patch,
> hbase-7824_v3.patch, hbase-7824-v7.patch, hbase-7824-v8.patch
>
>
> When there is log split work going on, master start up waits till all log
> split work completes even though the log split has nothing to do with meta
> region servers.
> It's a bad behavior considering a master node can run when log split is
> happening while its start up is blocking by log split work.
> Since master is kind of single point of failure, we should start it ASAP.
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