Ruslan Dautkhanov created ZEPPELIN-3483:
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Summary: NPE in
io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose
Key: ZEPPELIN-3483
URL: https://issues.apache.org/jira/browse/ZEPPELIN-3483
Project: Zeppelin
Issue Type: Bug
Components: Core
Affects Versions: 0.8.0, 0.9.0, 0.8.1
Environment: latest Zeppelin from master snapshot
Reporter: Ruslan Dautkhanov
[~jeffzhang], looking at the timing and exception stack it seems happens at
interpreter restart?
Doesn't seem to break anything, but I figured out I better point this out in
case if it can cause any issues.
{noformat}
ERROR [2018-05-22 10:35:33,232] (\{grpc-default-executor-1}
SerializingExecutor.java[run]:120) - Exception while executing runnable
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed@5793c1b4
java.lang.NullPointerException
at
io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose(ClientCalls.java:395)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:426)
at io.grpc.internal.ClientCallImpl.access$100(ClientCallImpl.java:76)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:512)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(ClientCallImpl.java:429)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:544)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:52)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:117)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
ERROR [2018-05-22 11:00:46,949] (\{grpc-default-executor-1}
SerializingExecutor.java[run]:120) - Exception while executing runnable
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed@485a4f69
java.lang.NullPointerException
at
io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose(ClientCalls.java:395)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:426)
at io.grpc.internal.ClientCallImpl.access$100(ClientCallImpl.java:76)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:512)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(ClientCallImpl.java:429)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:544)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:52)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:117)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
{noformat}
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