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Date: Thu, 9 Feb 2017 00:00:44 +0000 (UTC)
From: "Andrew Purtell (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.13039265.1485889330000.33562.1486598444671@Atlassian.JIRA>
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Subject: [jira] [Comment Edited] (HBASE-17572) HMaster: Caught throwable
 while processing event C_M_MERGE_REGION
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archived-at: Thu, 09 Feb 2017 00:00:50 -0000


    [ https://issues.apache.org/jira/browse/HBASE-17572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858720#comment-15858720 ] 

Andrew Purtell edited comment on HBASE-17572 at 2/9/17 12:00 AM:
-----------------------------------------------------------------

Reopening.

I was able to reproduce again with branch-1 (not branch-1.3). I misjudged this. In retrospect it's obvious, the exception thrown out of the doAs is UndeclaredThrowableException. We have to catch and transform the ServiceException inside the doAs block. Will revert the earlier commit and replace with the proper fix. 


was (Author: apurtell):
Reopening.

I was able to reproduce again with branch-1 (not branch-1.3). I misjudged this. In retrospect it's obvious, the exception thrown out of the doAs is UndeclaredThrowableException. We have to catch transform the ServiceException inside the doAs block. Will revert the earlier commit and replace with the proper fix. 

> HMaster: Caught throwable while processing event C_M_MERGE_REGION
> -----------------------------------------------------------------
>
>                 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
>            Assignee: Andrew Purtell
>             Fix For: 1.4.0, 1.3.1
>
>         Attachments: HBASE-17572-branch-1.3.patch
>
>
> Running ITBLL 1B rows against branch-1.3 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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