quotapool select error cause crash

[Amandeep Gautam]

I am seeing this transient error while using grpc-go (1.10.0-dev) on AIX 7.2 and gcc-go (go version go1.9 gccgo (GCC) 8.0.0 20171205 (experimental) aix/ppc)

goroutine 153 [select]:
google_golang_org_grpc_transport.get.pN42_google_golang_org_grpc_transport.quotaPool
        /go/src/google.golang.org/grpc/transport/control.go:191
google_golang_org_grpc_transport.Write.pN44_google_golang_org_grpc_transport.http2Server
        /go/src/google.golang.org/grpc/transport/http2_server.go:882
google_golang_org_grpc.sendResponse.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:769
google_golang_org_grpc.processUnaryRPC.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:945
google_golang_org_grpc.handleStream.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:1142
google_golang_org_grpc._nested82
        /go/src/google.golang.org/grpc/server.go:637
created by google_golang_org_grpc._nested81
        /go/src/google.golang.org/grpc/server.go:635 +316

goroutine 154 [select]:
google_golang_org_grpc_transport.get.pN42_google_golang_org_grpc_transport.quotaPool
        /go/src/google.golang.org/grpc/transport/control.go:191
google_golang_org_grpc_transport.Write.pN44_google_golang_org_grpc_transport.http2Server
        /go/src/google.golang.org/grpc/transport/http2_server.go:882
google_golang_org_grpc.sendResponse.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:769
google_golang_org_grpc.processUnaryRPC.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:945
google_golang_org_grpc.handleStream.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:1142
google_golang_org_grpc._nested82
        /go/src/google.golang.org/grpc/server.go:637
created by google_golang_org_grpc._nested81
        /go/src/google.golang.org/grpc/server.go:635 +316

goroutine 155 [select]:
google_golang_org_grpc_transport.get.pN42_google_golang_org_grpc_transport.quotaPool
        /go/src/google.golang.org/grpc/transport/control.go:191
google_golang_org_grpc_transport.Write.pN44_google_golang_org_grpc_transport.http2Server
        /go/src/google.golang.org/grpc/transport/http2_server.go:882
google_golang_org_grpc.sendResponse.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:769
google_golang_org_grpc.processUnaryRPC.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:945
google_golang_org_grpc.handleStream.pN29_google_golang_org_grpc.Server
        /go/src/google.golang.org/grpc/server.go:1142
google_golang_org_grpc._nested82
        /go/src/google.golang.org/grpc/server.go:637
created by google_golang_org_grpc._nested81
        /go/src/google.golang.org/grpc/server.go:635 +316

There is another issue (https://github.com/grpc/grpc-go/issues/1857) which probably discusses similar thing. I am wondering if this should be filed as a bug?

Any ideas on how to reproduce this consistently or go about fixing this?

[mmu...@google.com]

I assume the github issue https://github.com/grpc/grpc-go/issues/1955 can be used to track this.

[aman...@cohesity.com]

Yes. But sadly we are not able to reproduce it again. Maybe I mistook it for an error which was fixed with something else.