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Posted to notifications@skywalking.apache.org by GitBox <gi...@apache.org> on 2020/03/06 12:36:40 UTC
[GitHub] [skywalking] Felicite93 opened a new issue #4450:
GRPCChannelManager : Create channel to fail
Felicite93 opened a new issue #4450: GRPCChannelManager : Create channel to fail
URL: https://github.com/apache/skywalking/issues/4450
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [v] Question or discussion
- [ ] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
___
### Question
- What do you want to know?
What is the cause? help me, thanks.
___
### Bug
- Which version of SkyWalking, OS and JRE?
version: 6.6.0
OS: centos 4.14.123-111.109.amzn2.x86_64
JDK version: 1.8.0_121
- Which company or project?
- What happen?
I remove the apm-vertx-core-3.x-plugin-6.6.0.jar from the plugins
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### log
DEBUG 2020-03-06 12:13:18:636 SkywalkingAgent-5-ServiceAndEndpointRegisterClient-0 ServiceAndEndpointRegisterClient : ServiceAndEndpointRegisterClient running, status:DISCONNECT.
DEBUG 2020-03-06 12:13:21:583 SkywalkingAgent-2-GRPCChannelManager-0 GRPCChannelManager : Selected collector grpc service running, reconnect:true.
ERROR 2020-03-06 12:13:21:584 SkywalkingAgent-2-GRPCChannelManager-0 GRPCChannelManager : Create channel to fail.
java.lang.NullPointerException
at org.apache.skywalking.apm.agent.core.remote.GRPCChannelManager.run(GRPCChannelManager.java:122)
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)
DEBUG 2020-03-06 12:13:21:585 SkywalkingAgent-2-GRPCChannelManager-0 GRPCChannelManager : Selected collector grpc service is not available. Wait 30 seconds to retry
DEBUG 2020-03-06 12:13:21:638 SkywalkingAgent-5-ServiceAndEndpointRegisterClient-0 ServiceAndEndpointRegisterClient : ServiceAndEndpointRegisterClient running, status:DISCONNECT.
>
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[GitHub] [skywalking] wu-sheng commented on issue #4450: GRPCChannelManager
: Create channel to fail
Posted by GitBox <gi...@apache.org>.
wu-sheng commented on issue #4450: GRPCChannelManager : Create channel to fail
URL: https://github.com/apache/skywalking/issues/4450#issuecomment-595751760
Need you local debug to see what happens.
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[GitHub] [skywalking] wu-sheng closed issue #4450: GRPCChannelManager :
Create channel to fail
Posted by GitBox <gi...@apache.org>.
wu-sheng closed issue #4450: GRPCChannelManager : Create channel to fail
URL: https://github.com/apache/skywalking/issues/4450
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[GitHub] [skywalking] wu-sheng commented on issue #4450: GRPCChannelManager
: Create channel to fail
Posted by GitBox <gi...@apache.org>.
wu-sheng commented on issue #4450: GRPCChannelManager : Create channel to fail
URL: https://github.com/apache/skywalking/issues/4450#issuecomment-595751343
I am not sure what is happening. I could just say the `managedChannel` is NULL somehow.
https://github.com/apache/skywalking/blob/v6.6.0/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/remote/GRPCChannelManager.java#L122
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