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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] (HBASE-17572) HMaster: Caught throwable while processing event C_M_MERGE_REGION (UndeclaredThrowableException)
Date Tue, 31 Jan 2017 19:02:51 GMT
Andrew Purtell created HBASE-17572:
--------------------------------------

             Summary: HMaster: Caught throwable while processing event C_M_MERGE_REGION (UndeclaredThrowableException)
                 Key: HBASE-17572
                 URL: https://issues.apache.org/jira/browse/HBASE-17572
             Project: HBase
          Issue Type: Bug
    Affects Versions: 1.3.0
            Reporter: Andrew Purtell


Running ITBLL 1B rows against 1.3.0 compiled against Hadoop 2.7.3 with the noKill monkey policy,
I see both masters go down with

master.HMaster: Caught throwable while processing event C_M_MERGE_REGION
java.lang.reflect.UndeclaredThrowableException

In ServerManager#sendRegionsMerge we call ProtobufUtil#mergeRegions, which does a doAs, and
the code within that block invokes RSRpcServices#mergeRegions, but is not resilient against
RegionOpeningException ("region is opening")

An UndeclaredThrowableException is "thrown by a method invocation on a proxy instance if its
invocation handler's invoke method throws a checked exception (a Throwable that is not assignable
to RuntimeException or Error) that is not assignable to any of the exception types declared
in the throws clause of the method that was invoked on the proxy instance and dispatched to
the invocation handler." (http://docs.oracle.com/javase/7/docs/api/java/lang/reflect/UndeclaredThrowableException.html)
 

{noformat}
2017-01-31 07:21:17,495 FATAL [MASTER_TABLE_OPERATIONS-node-1:16000-0] master.HMaster: Caught
throwable while processing event C_M_MERGE_REGION
java.lang.reflect.UndeclaredThrowableException
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1737)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.mergeRegions(ProtobufUtil.java:1990)
        at org.apache.hadoop.hbase.master.ServerManager.sendRegionsMerge(ServerManager.java:925)
        at org.apache.hadoop.hbase.master.handler.DispatchMergingRegionHandler.process(DispatchMergingRegionHandler.java:153)
        at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: com.google.protobuf.ServiceException: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.exceptions.RegionOpeningException):
org.apache.hadoop.hbase.exceptions.RegionOpeningException: Region IntegrationTestBigLinkedList,|\xFFnk\x1C\x85<[\x1Ef\xFDE\xF9\xAA\xAC\x08,1485846598043.f56ad22121e872777468020c4452a7c7.
is opening on node-2.cluster,16020,1485822382322
        at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegionByEncodedName(HRegionServer.java:2964)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.getRegion(RSRpcServices.java:1139)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.mergeRegions(RSRpcServices.java:1497)
        at org.apache.hadoop.hbase.protobuf.generated.AdminProtos$AdminService$2.callBlockingMethod(AdminProtos.java:22749)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2355)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:188)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:168)

        at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:244)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:340)
        at org.apache.hadoop.hbase.protobuf.generated.AdminProtos$AdminService$BlockingStub.mergeRegions(AdminProtos.java:23695)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil$1.run(ProtobufUtil.java:1993)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil$1.run(ProtobufUtil.java:1990)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1719)
        ... 7 more
Caused by: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.exceptions.RegionOpeningException):
org.apache.hadoop.hbase.exceptions.RegionOpeningException: Region IntegrationTestBigLinkedList,|\xFFnk\x1C\x85<[\x1Ef\xFDE\xF9\xAA\xAC\x08,1485846598043.f56ad22121e872777468020c4452a7c7.
is opening on node-2.cluster,16020,1485822382322
        at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegionByEncodedName(HRegionServer.java:2964)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.getRegion(RSRpcServices.java:1139)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.mergeRegions(RSRpcServices.java:1497)
        at org.apache.hadoop.hbase.protobuf.generated.AdminProtos$AdminService$2.callBlockingMethod(AdminProtos.java:22749)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2355)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:188)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:168)

        at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1286)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:231)
        ... 14 more

{noformat}




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