Performance : Panic observed concurrent map read and map write

fatal error: concurrent map read and map write

goroutine 7119 [running]:

runtime.throw(0xfe6b76, 0x21)

	/home/couchbase/.cbdepscache/exploded/x86_64/go-1.13.7/go/src/runtime/panic.go:774 +0x72 fp=0xc006287b58 sp=0xc006287b28 pc=0x432f22

runtime.mapaccess2(0xe538a0, 0xc003499320, 0xc006287bd6, 0xc006287c68, 0x5)

	/home/couchbase/.cbdepscache/exploded/x86_64/go-1.13.7/go/src/runtime/map.go:470 +0x278 fp=0xc006287ba0 sp=0xc006287b58 pc=0x411968

github.com/couchbase/eventing/consumer.(*Consumer).checkIfAlreadyEnqueued(0xc005a7b200, 0xc00349008f, 0xc006287d00)

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/eventing/consumer/util.go:20 +0xd1 fp=0xc006287d18 sp=0xc006287ba0 pc=0xc6b021

github.com/couchbase/eventing/consumer.(*Consumer).vbsStateUpdate.func2(0xfdc483, 0x18, 0xc005a7b200, 0x2, 0xc0004dd800, 0x6d, 0x80, 0xc006dd8d90)

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/eventing/consumer/vbucket_takeover.go:156 +0x46e fp=0xc006287fa0 sp=0xc006287d18 pc=0xca0a9e

runtime.goexit()

	/home/couchbase/.cbdepscache/exploded/x86_64/go-1.13.7/go/src/runtime/asm_amd64.s:1357 +0x1 fp=0xc006287fa8 sp=0xc006287fa0 pc=0x462cc1

created by github.com/couchbase/eventing/consumer.(*Consumer).vbsStateUpdate

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/eventing/consumer/vbucket_takeover.go:127 +0xb6d

goroutine 1 [chan receive, 1 minutes]:

github.com/couchbase/eventing/supervisor.(*SuperSupervisor).HandleSupCmdMsg(0xc0004fbb80)

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/eventing/supervisor/super_supervisor.go:805 +0x73

main.main()

	goproj/src/github.com/couchbase/eventing/cmd/producer/main.go:110 +0x432

goroutine 19 [select, 2 minutes]:

github.com/couchbase/cbauth/cbauthimpl.(*tlsNotifier).loop(0xc00013e220)

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/cbauth/cbauthimpl/impl.go:382 +0xa3

created by github.com/couchbase/cbauth/cbauthimpl.NewSVCForTest

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/cbauth/cbauthimpl/impl.go:539 +0x269

goroutine 20 [select, 1 minutes]:

github.com/couchbase/cbauth/cbauthimpl.(*cfgChangeNotifier).loop(0xc00013e240)

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/cbauth/cbauthimpl/impl.go:302 +0xb7

created by github.com/couchbase/cbauth/cbauthimpl.NewSVCForTest

	/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/cbauth/cbauthimpl/impl.go:540 +0x292