WindyGao commented on pull request #4702:
URL: https://github.com/apache/incubator-doris/pull/4702#issuecomment-911485561
> `2021-08-24 17:18:24,477 WARN (doris-mysql-nio-pool-32867|95614)
[StmtExecutor.execute():406] execute Exception. {}
org.apache.doris.common.UserException: errCode = 2, detailMessage = there is no
scanNode Backend. [409768988: in black list(Waited 10000 microseconds (plus 55
microseconds delay) for
io.grpc.stub.ClientCalls$GrpcFuture@4b59b6d0[status=PENDING,
info=[GrpcFuture{clientCall=ClientCallImpl{method=MethodDescriptor{fullMethodName=doris.PBackendService/update_cache,
type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true,
requestMarshaller=io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@509b75a2,
responseMarshaller=io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@6bb04bd8,
schemaDescriptor=org.apache.doris.proto.PBackendServiceGrpc$PBackendServiceMethodDescriptorSupplier@428ecf20}}}]])]
at org.apache.doris.qe.SimpleScheduler.getLocation(SimpleScheduler.java:123)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.Coordinator.selectBackendsByRoundRobin(Co
ordinator.java:1378) ~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.Coordinator.computeScanRangeAssignmentByScheduler(Coordinator.java:1395)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.Coordinator.computeScanRangeAssignment(Coordinator.java:1316)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.Coordinator.exec(Coordinator.java:422) ~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.StmtExecutor.handleCacheStmt(StmtExecutor.java:782)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.StmtExecutor.handleQueryStmt(StmtExecutor.java:846)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:343)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.StmtExecutor.execute(StmtExecutor.java:288)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:206)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.ConnectProcessor.dispatch(ConnectProcessor.java:344)
~[palo-fe.jar:3.4.0] at
org.apache.doris.qe.ConnectProcessor.processOnce(ConnectProcessor.java:545)
~[pal
o-fe.jar:3.4.0] at
org.apache.doris.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:50)
~[palo-fe.jar:3.4.0] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[?:1.8.0_131] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[?:1.8.0_131] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]`
>
> there is the similar problem in v0.14
> this be node is not crashed but fe.warn has this messge
> query is also failed
Has anyone else encountered this problem？
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