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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13532) Make UnknownScannerException logging less scary
Date Thu, 23 Apr 2015 00:55:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508240#comment-14508240
] 

Hadoop QA commented on HBASE-13532:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12727361/HBASE-13532.patch
  against master branch at commit afd7a8f4742ddbc575b45fc141a75551b55c56f5.
  ATTACHMENT ID: 12727361

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.1 2.5.2 2.6.0)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of
protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/13782//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/13782//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/13782//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/13782//console

This message is automatically generated.

> Make UnknownScannerException logging less scary
> -----------------------------------------------
>
>                 Key: HBASE-13532
>                 URL: https://issues.apache.org/jira/browse/HBASE-13532
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Apekshit Sharma
>            Priority: Trivial
>         Attachments: 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}



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