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https://issues.apache.org/jira/browse/HBASE-4710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13140947#comment-13140947
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stack commented on HBASE-4710:
------------------------------
+1 on patch.
> HBaseRPC$UnknownProtocolException should abort any client retries in
> HConnectionManager
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-4710
> URL: https://issues.apache.org/jira/browse/HBASE-4710
> Project: HBase
> Issue Type: Bug
> Components: coprocessors
> Affects Versions: 0.92.0, 0.94.0
> Reporter: Gary Helmling
> Assignee: Gary Helmling
> Fix For: 0.92.0
>
> Attachments: HBASE-4710.patch
>
>
> While {{HBaseRPC$UnknownProtocolException}} currently extends
> {{DoNotRetryIOException}}, it's still allowing retries of client RPCs when
> encountered in {{HConnectionManager.getRegionServerWithRetries()}}. It turns
> out that {{UnknownProtocolException}} is missing a public constructor taking
> a single {{String}} argument, which is required when unwrapping an
> {{IOException}} from a {{RemoteException}} in
> {{RemoteExceptionHandler.decodeRemoteException()}}.
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