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https://issues.apache.org/jira/browse/HBASE-20867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16555021#comment-16555021
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Allan Yang commented on HBASE-20867:
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[~stack], Thanks for reviewing! Will upload a patch later.
> RS may get killed while master restarts
> ---------------------------------------
>
> Key: HBASE-20867
> URL: https://issues.apache.org/jira/browse/HBASE-20867
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 3.0.0, 2.1.0, 2.0.1
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Major
> Fix For: 3.0.0, 2.0.2, 2.1.1
>
> Attachments: HBASE-20867.branch-2.0.001.patch,
> HBASE-20867.branch-2.0.002.patch, HBASE-20867.branch-2.0.003.patch,
> HBASE-20867.branch-2.0.004.patch, HBASE-20867.branch-2.0.005.patch
>
>
> If the master is dispatching a RPC call to RS when aborting. A connection
> exception may be thrown by the RPC layer(A IOException with "Connection
> closed" message in this case). The RSProcedureDispatcher will regard is as an
> un-retryable exception and pass it to UnassignProcedue.remoteCallFailed,
> which will expire the RS.
> Actually, the RS is very healthy, only the master is restarting.
> I think we should deal with those kinds of connection exceptions in
> RSProcedureDispatcher and retry the rpc call
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