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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
   ___
   ### 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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