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Appy commented on HBASE-13532: ------------------------------ Just log message change. No testing needed. Ready for review/commit. > Make UnknownScannerException logging less scary > ----------------------------------------------- > > Key: HBASE-13532 > URL: https://issues.apache.org/jira/browse/HBASE-13532 > Project: HBase > Issue Type: Improvement > Reporter: Appy > Assignee: Appy > Priority: Trivial > Attachments: HBASE-13532-master.patch, HBASE-13532.patch > > > A customer reported seeing client-side UnknownScannerExceptions after an > HBase upgrade/restart. Restarting a RS will expire leases on the server side. > So, given that there was no actual problem and everything was working as it > should, reworking this exception for more appropriate logging. > {code} > org.apache.hadoop.hbase.UnknownScannerException: > org.apache.hadoop.hbase.UnknownScannerException: Name: 10092964, already > closed? > at > org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3043) > > at > org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29497) > > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012) > at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:160) > > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$000(SimpleRpcScheduler.java:38) > > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:110) > > at java.lang.Thread.run(Thread.java:724) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > at > sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) > > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > > at java.lang.reflect.Constructor.newInstance(Constructor.java:526) > at > org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106) > > at > org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95) > > at > org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:284) > > at > org.apache.hadoop.hbase.client.ScannerCallable.close(ScannerCallable.java:287) > > at > org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:153) > at > org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:57) > at > org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:114) > > at > org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:90) > > at org.apache.hadoop.hbase.client.ClientScanner.close(ClientScanner.java:431) > at > com.squareup.moco.persistence.TransactionTable.scan(TransactionTable.java:207) > > at > com.squareup.moco.persistence.TransactionTable$$EnhancerByGuice$$a12c1766.CGLIB$scan$9(<generated>) > > at > com.squareup.moco.persistence.TransactionTable$$EnhancerByGuice$$a12c1766$$FastClassByGuice$$606c8773.invoke(<generated>) > > at > com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228) > > at > com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:75) > > at > com.squareup.common.metrics.TimedHistogramInterceptor.invoke(TimedHistogramInterceptor.java:29) > > at > com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:75) > > at > com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55) > > at > com.squareup.moco.persistence.TransactionTable$$EnhancerByGuice$$a12c1766.scan(<generated>) > > at > com.squareup.moco.persistence.TransactionTable$1.run(TransactionTable.java:180) > > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > > at java.lang.Thread.run(Thread.java:724) > Caused by: > org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.UnknownScannerException): > org.apache.hadoop.hbase.UnknownScannerException: Name: 10092964, already > closed? > at > org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3043) > > at > org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29497) > > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012) > at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98) > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:160) > > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$000(SimpleRpcScheduler.java:38) > > at > org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:110) > > at java.lang.Thread.run(Thread.java:724) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)