Sun Xin created HBASE-26406:
-------------------------------

             Summary: Can not add peer replicating to non-HBase
                 Key: HBASE-26406
                 URL: https://issues.apache.org/jira/browse/HBASE-26406
             Project: HBase
          Issue Type: Bug
          Components: Replication
    Affects Versions: 2.4.0, 3.0.0-alpha-1
            Reporter: Sun Xin
            Assignee: Sun Xin


Failed to add a peer replicating to non-HBase(like MQ) by implementing custom 
ReplicationEndpoint,  got exception like this in my UT: 
{code:java}
2021-10-29T15:14:47,632 INFO  [RPCClient-NioEventLoopGroup-5-3] 
client.RawAsyncHBaseAdmin$ReplicationProcedureBiConsumer(2761): Operation: 
ADD_REPLICATION_PEER, peerId: 1 failed with Invalid cluster key: , should not 
replicate to itself for 
HBaseInterClusterReplicationEndpoint2021-10-29T15:14:47,632 INFO  
[RPCClient-NioEventLoopGroup-5-3] 
client.RawAsyncHBaseAdmin$ReplicationProcedureBiConsumer(2761): Operation: 
ADD_REPLICATION_PEER, peerId: 1 failed with Invalid cluster key: , should not 
replicate to itself for HBaseInterClusterReplicationEndpoint
org.apache.hadoop.hbase.DoNotRetryIOException: Invalid cluster key: , should 
not replicate to itself for HBaseInterClusterReplicationEndpoint
 at java.lang.Thread.getStackTrace(Thread.java:1559) at 
org.apache.hadoop.hbase.util.FutureUtils.setStackTrace(FutureUtils.java:130) at 
org.apache.hadoop.hbase.util.FutureUtils.rethrow(FutureUtils.java:149) at 
org.apache.hadoop.hbase.util.FutureUtils.get(FutureUtils.java:186) at 
org.apache.hadoop.hbase.client.Admin.addReplicationPeer(Admin.java:1948) at 
org.apache.hadoop.hbase.client.Admin.addReplicationPeer(Admin.java:1936) at 
org.apache.hadoop.hbase.replication.TestNonHBaseReplicationEndpoint.test(TestNonHBaseReplicationEndpoint.java:97)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498) at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
 at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
 at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at 
org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
 at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
 at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at 
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at 
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at 
org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at 
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
at org.apache.hadoop.hbase.SystemExitRule$1.evaluate(SystemExitRule.java:38) at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:288)
 at 
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:282)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266) at 
java.lang.Thread.run(Thread.java:748) at --------Future.get--------(Unknown 
Source) at 
org.apache.hadoop.hbase.master.replication.ReplicationPeerManager.checkClusterId(ReplicationPeerManager.java:527)
 at 
org.apache.hadoop.hbase.master.replication.ReplicationPeerManager.checkPeerConfig(ReplicationPeerManager.java:367)
 at 
org.apache.hadoop.hbase.master.replication.ReplicationPeerManager.preAddPeer(ReplicationPeerManager.java:123)
 at 
org.apache.hadoop.hbase.master.replication.AddPeerProcedure.prePeerModification(AddPeerProcedure.java:101)
 at 
org.apache.hadoop.hbase.master.replication.ModifyPeerProcedure.executeFromState(ModifyPeerProcedure.java:162)
 at 
org.apache.hadoop.hbase.master.replication.ModifyPeerProcedure.executeFromState(ModifyPeerProcedure.java:43)
 at 
org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:190)
 at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:953) 
at 
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1667)
 at 
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1414)
 at 
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$1100(ProcedureExecutor.java:78)
 at 
org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1981)
{code}
HBASE-24743 ignores this situation and introducing this bug.



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