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https://issues.apache.org/jira/browse/HBASE-14157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14643295#comment-14643295
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Ted Yu commented on HBASE-14157:
--------------------------------
{code}
Failed tests:
TestDistributedLogSplitting.testLogReplayTwoSequentialRSDown:653
expected:<1000> but was:<929>
{code}
The above test failed in other QA run as well.
> Interfaces implemented by subclasses should be checked when registering
> CoprocessorService
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-14157
> URL: https://issues.apache.org/jira/browse/HBASE-14157
> Project: HBase
> Issue Type: Bug
> Reporter: Alok Lal
> Assignee: Ted Yu
> Attachments: 14157-v1.txt, 14157-v2.txt
>
>
> Alok reported seeing the following exception when subclass of class which
> implements CoprocessorService is used for hbase.coprocessor.region.classes :
> {code}
> hbase(main):015:0> grant 'mktg1', 'RWC', 'iemployee'
> ERROR: org.apache.hadoop.hbase.exceptions.UnknownProtocolException: No
> registered coprocessor service found for name AccessControlService in region
> hbase:acl,,1437137157604.2daf735ea38da95e9ba249db6b63b79c.
> at
> org.apache.hadoop.hbase.regionserver.HRegion.execService(HRegion.java:7367)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.execServiceOnRegion(RSRpcServices.java:1873)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.execService(RSRpcServices.java:1855)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32209)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2112)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:101)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> {code}
> The root cause is in the following code of RegionCoprocessorHost:
> {code}
> for (Class<?> c : implClass.getInterfaces()) {
> if (CoprocessorService.class.isAssignableFrom(c)) {
> region.registerService( ((CoprocessorService)instance).getService() );
> }
> }
> {code}
> We currently only check the interfaces directly implemented by the underlying
> class.
> What should be done is to check all the interfaces implemented by class
> itself and its superclasses.
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