darcydai opened a new issue #4848:
URL: https://github.com/apache/skywalking/issues/4848
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [* ] Question or discussion
- [* ] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
___
### Question
- What do you want to know?
___
### Bug
- Which version of SkyWalking, OS and JRE?
Version 6.6.0 in jdk 1.8 and centos 7.0
- Which company or project?
koolearn
- What happen?
If possible, provide a way for reproducing the error. e.g. demo application,
component version.
I found some no class found some error in my application biz log(not in
skywalking agent log), then I download the agent jar in product machine and
decompile the jar found the class exists.
```
Jun 01, 2020 4:51:36 PM
org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls cancelThrow
SEVERE: RuntimeException encountered while closing call
java.lang.NoClassDefFoundError:
org/apache/skywalking/apm/dependencies/io/grpc/internal/DelayedStream$8
at
org.apache.skywalking.apm.dependencies.io.grpc.internal.DelayedStream.cancel(DelayedStream.java:267)
at
org.apache.skywalking.apm.dependencies.io.grpc.internal.DelayedClientTransport$PendingStream.cancel(DelayedClientTransport.java:367)
at
org.apache.skywalking.apm.dependencies.io.grpc.internal.ClientCallImpl.cancel(ClientCallImpl.java:395)
at
org.apache.skywalking.apm.dependencies.io.grpc.PartialForwardingClientCall.cancel(PartialForwardingClientCall.java:39)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall.cancel(ForwardingClientCall.java:22)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall$SimpleForwardingClientCall.cancel(ForwardingClientCall.java:44)
at
org.apache.skywalking.apm.dependencies.io.grpc.PartialForwardingClientCall.cancel(PartialForwardingClientCall.java:39)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall.cancel(ForwardingClientCall.java:22)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall$SimpleForwardingClientCall.cancel(ForwardingClientCall.java:44)
at
org.apache.skywalking.apm.dependencies.io.grpc.PartialForwardingClientCall.cancel(PartialForwardingClientCall.java:39)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall.cancel(ForwardingClientCall.java:22)
at
org.apache.skywalking.apm.dependencies.io.grpc.ForwardingClientCall$SimpleForwardingClientCall.cancel(ForwardingClientCall.java:44)
at
org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls.cancelThrow(ClientCalls.java:237)
at
org.apache.skywalking.apm.dependencies.io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:134)
at
org.apache.skywalking.apm.network.register.v2.ServiceInstancePingGrpc$ServiceInstancePingBlockingStub.doPing(ServiceInstancePingGrpc.java:158)
at
org.apache.skywalking.apm.agent.core.remote.ServiceAndEndpointRegisterClient.run(ServiceAndEndpointRegisterClient.java:179)
at
org.apache.skywalking.apm.util.RunnableWithExceptionProtection.run(RunnableWithExceptionProtection.java:36)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
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)
```
### Requirement or improvement
- Please describe about your requirements or improvement suggestions.
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