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https://issues.apache.org/jira/browse/HBASE-20708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16513181#comment-16513181
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Duo Zhang commented on HBASE-20708:
-----------------------------------
OK, there is a problem that how we deal with master graceful shutdown. In this
case, the new design will be broken as it will not schedule any SCP so no
region will be online. Let me dig more.
> Remove the usage of RecoverMetaProcedure in master startup
> ----------------------------------------------------------
>
> Key: HBASE-20708
> URL: https://issues.apache.org/jira/browse/HBASE-20708
> Project: HBase
> Issue Type: Bug
> Components: proc-v2, Region Assignment
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Blocker
> Fix For: 3.0.0, 2.1.0
>
> Attachments: HBASE-20708-v1.patch, HBASE-20708-v2.patch,
> HBASE-20708-v3.patch, HBASE-20708.patch
>
>
> In HBASE-20700, we make RecoverMetaProcedure use a special lock which is only
> used by RMP to avoid dead lock with MoveRegionProcedure. But we will always
> schedule a RMP when master starting up, so we still need to make sure that
> there is no race between this RMP and other RMPs and SCPs scheduled before
> the master restarts.
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