[jira] [Created] (HDDS-4411) Ozone DataNode has GRPC shutdown error in stderr

["Wei-Chiu Chuang (Jira)" <ji...@apache.org>]

Wei-Chiu Chuang created HDDS-4411:
-------------------------------------

             Summary: Ozone DataNode has GRPC shutdown error in stderr 
                 Key: HDDS-4411
                 URL: https://issues.apache.org/jira/browse/HDDS-4411
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
          Components: Ozone Datanode
    Affects Versions: 1.0.0
            Reporter: Wei-Chiu Chuang


I am not sure if this belongs to Ratis or Ozone. Please feel free to move to a more suitable place. Found lots of error messages in stderr after I lost a disk and Ozone started to replicate containers around.

{noformat}
Oct 29, 2020 11:29:23 AM org.apache.ratis.thirdparty.io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference cleanQueue
SEVERE: *~*~*~ Channel ManagedChannelImpl{logId=2961751, target=10.12.1.80:9859} was not shutdown properly!!! ~*~*~*
    Make sure to call shutdown()/shutdownNow() and wait until awaitTermination() returns true.
java.lang.RuntimeException: ManagedChannel allocation site
	at org.apache.ratis.thirdparty.io.grpc.internal.ManagedChannelOrphanWrapper$ManagedChannelReference.<init>(ManagedChannelOrphanWrapper.java:93)
	at org.apache.ratis.thirdparty.io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:53)
	at org.apache.ratis.thirdparty.io.grpc.internal.ManagedChannelOrphanWrapper.<init>(ManagedChannelOrphanWrapper.java:44)
	at org.apache.ratis.thirdparty.io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:518)
	at org.apache.hadoop.ozone.container.replication.GrpcReplicationClient.<init>(GrpcReplicationClient.java:84)
	at org.apache.hadoop.ozone.container.replication.SimpleContainerDownloader.getContainerDataFromReplicas(SimpleContainerDownloader.java:79)
	at org.apache.hadoop.ozone.container.replication.DownloadAndImportReplicator.replicate(DownloadAndImportReplicator.java:112)
	at org.apache.hadoop.ozone.container.replication.ReplicationSupervisor$TaskRunner.run(ReplicationSupervisor.java:129)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
{noformat}

Looks like a cosmetic issue, but I wonder if there's possibility for resource leakage if the thread is not shutdown properly. File this jira for the record.



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