[Bug]

[h-mx]

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• I had searched in the issues and found no similar issues.

Apache SkyWalking Component

OAP server (apache/skywalking)

What happened

The version I installed is 9.1.0. No error was reported when the agent was started. The oapServer reported NullPointerExceptionr when the agent was started

What you expected to happen

2022-07-21 09:59:45,513 - org.apache.skywalking.oap.server.receiver.trace.provider.handler.v8.grpc.TraceSegmentReportServiceHandler - 75 [grpcServerPool-1-thread-111] ERROR [] - null
java.lang.NullPointerException: null
at org.apache.skywalking.oap.server.core.source.EndpointRelation.prepare(EndpointRelation.java:101) ~[server-core-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.core.analysis.DispatcherManager.forward(DispatcherManager.java:59) ~[server-core-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.core.source.SourceReceiverImpl.receive(SourceReceiverImpl.java:36) ~[server-core-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.analyzer.provider.trace.parser.listener.EndpointDepFromCrossThreadAnalysisListener.lambda$build$0(EndpointDepFromCrossThreadAnalysisListener.java:130) ~[agent-analyzer-9.1.0.jar:9.1.0]
at java.util.ArrayList.forEach(ArrayList.java:1541) ~[?:?]
at org.apache.skywalking.oap.server.analyzer.provider.trace.parser.listener.EndpointDepFromCrossThreadAnalysisListener.build(EndpointDepFromCrossThreadAnalysisListener.java:124) ~[agent-analyzer-9.1.0.jar:9.1.0]
at java.util.ArrayList.forEach(ArrayList.java:1541) ~[?:?]
at org.apache.skywalking.oap.server.analyzer.provider.trace.parser.TraceAnalyzer.notifyListenerToBuild(TraceAnalyzer.java:75) ~[agent-analyzer-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.analyzer.provider.trace.parser.TraceAnalyzer.doAnalysis(TraceAnalyzer.java:71) ~[agent-analyzer-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.analyzer.provider.trace.parser.SegmentParserServiceImpl.send(SegmentParserServiceImpl.java:40) ~[agent-analyzer-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.receiver.trace.provider.handler.v8.grpc.TraceSegmentReportServiceHandler$1.onNext(TraceSegmentReportServiceHandler.java:72) [skywalking-trace-receiver-plugin-9.1.0.jar:9.1.0]
at org.apache.skywalking.oap.server.receiver.trace.provider.handler.v8.grpc.TraceSegmentReportServiceHandler$1.onNext(TraceSegmentReportServiceHandler.java:63) [skywalking-trace-receiver-plugin-9.1.0.jar:9.1.0]
at io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:262) [grpc-stub-1.46.0.jar:1.46.0]
at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailableInternal(ServerCallImpl.java:318) [grpc-core-1.46.0.jar:1.46.0]
at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:301) [grpc-core-1.46.0.jar:1.46.0]
at io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:834) [grpc-core-1.46.0.jar:1.46.0]
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37) [grpc-core-1.46.0.jar:1.46.0]
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133) [grpc-core-1.46.0.jar:1.46.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
at java.lang.Thread.run(Thread.java:829) [?:?]

How to reproduce

The version I installed is 9.1.0. No error was reported when the agent was started. The oapServer reported NullPointerExceptionr when the agent was started

Anything else

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[wu-sheng]

Duplicated #9297 (comment) and fixed by #9300

Next time, please make sure you at least have a good issue title.

[xiaoniankang]

Hello, could you tell me how to solve this problem

[wu-sheng]

Can't you simply read the milestone of PR? #9300. Why you put comments everywhere.