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https://issues.apache.org/jira/browse/HBASE-1669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732780#action_12732780
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Andrew Purtell commented on HBASE-1669:
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The patch should throw an exception if a code is already registered. Otherwise,
+1.
> need dynamic extensibility of HBaseRPC code maps and interface lists
> --------------------------------------------------------------------
>
> Key: HBASE-1669
> URL: https://issues.apache.org/jira/browse/HBASE-1669
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: Andrew Purtell
> Fix For: 0.20.0
>
> Attachments: 1588.patch, 1669.patch
>
>
> From
> https://issues.apache.org/jira/browse/HBASE-1588?focusedCommentId=12732675&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12732675
> {quote}
> Now RPC does not work for the transactional interface. I see thinks like:
> [17/07/09 11:34:59] 26052 [or: SeedService] ERROR
> org.apache.hadoop.ipc.HbaseRPC - Unsupported type beginTransaction
> Caused by: java.lang.UnsupportedOperationException: No code for unexpected
> abort
> at
> org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.writeMethodNameCode(HBaseRPC.java:225)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.write(HBaseRPC.java:152)
> at
> org.apache.hadoop.hbase.ipc.HBaseClient$Connection.sendParam(HBaseClient.java:475)
> at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:708)
> at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:321)
> at $Proxy18.abort(Unknown Source)
> at
> org.apache.hadoop.hbase.client.transactional.TransactionManager.abort(TransactionManager.java:214)
> at
> org.apache.hadoop.hbase.client.transactional.TransactionManager.abort(TransactionManager.java:198)
> Looking at HBaseRPC, it seems the interfaces are added in a static block
> inside of Invocation. Is there a way to add my interface from contrib?
> {quote}
> Maybe we can rig up something which uses annotations to mark RPC interfaces
> and associate an integer code with them, and then scan all classes on the
> classpath from a static initializer or constructor in HBaseRPC?
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