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https://issues.apache.org/jira/browse/HBASE-1669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732737#action_12732737
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Clint Morgan commented on HBASE-1669:
-------------------------------------
Works for me in an all in one JVM setup.
Andrew is correct to worry about class load orders. Currently the RPC stuff
will always init before contibs can add thier own codes, but there is no way to
enforce the contrib code order. Moreover, i put the static block in
TXRegionServer so that won't get triggered for clients (only worked for me
cause same JVM).
Need to find a better way. Perhaps pull from hbase-site?
> 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
>
>
> 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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