Report a Dgraph Bug
What version of Dgraph are you using?
Dgraph version : v20.11.0
Dgraph codename : tchalla
Dgraph SHA-256 : 8591d39e46caf64c1f8b9d8c8dcdb1afe7a61bbe5d9e08cd597faa4978717544
Commit SHA-1 : c4245ad55
Commit timestamp : 2020-12-16 15:55:40 +0530
Branch : HEAD
Go version : go1.15.5
jemalloc enabled : false
Have you tried reproducing the issue with the latest release?
Just tchalla
What is the hardware spec (RAM, OS)?
Darwin - 11.1 (20C69) - Bigsur
32 GB DDR4
Steps to reproduce the issue (command/config used to run Dgraph).
Just start Dgraph.
First, it was working fine for days - I was using GraphQL. Now even removing the directories(rm -fr p w zw
) it panics.
Kind of solved by stopping all related dev envs. Stopping the actual Dgraph instances, removing the folders, stopping the React dev, stopping the JS server, stopping the GraphiQL software. And it looks like it was something related to the Subscription. Not sure.
{
"errors": [
{
"message": "Internal Server Error - a panic was trapped. This indicates a bug in the GraphQL server. A stack trace was logged. Please let us know by filing an issue with the stack trace."
}
]
}
I1229 22:58:18.615857 90384 log.go:34] Writes flushed. Stopping compactions now...
I1229 22:58:18.625141 90384 log.go:34] DropPrefix done
I1229 22:58:18.625160 90384 log.go:34] Resuming writes
I1229 22:58:18.625226 90384 index.go:942] Rebuilding index for attr dgraph.graphql.p_sha256hash and tokenizers [exact]
I1229 22:58:18.626944 90384 groups.go:159] Server is ready
I1229 22:58:18.626962 90384 access_ee.go:389] ResetAcl closed
I1229 22:58:18.626976 90384 access_ee.go:311] RefreshAcls closed
I1229 22:58:18.695223 90384 log.go:34] Rebuilding index for predicate dgraph.graphql.p_sha256hash (1/2): Sent data of size 0 B
I1229 22:58:18.712526 90384 mutation.go:188] Done schema update predicate:"dgraph.graphql.p_sha256hash" value_type:STRING directive:INDEX tokenizer:"exact"
I1229 22:58:18.712570 90384 draft.go:124] Operation completed with id: opIndexing
I1229 22:58:18.829679 90384 graphql.go:39] ResetCors closed
I1229 22:58:18.830431 90384 run.go:819] Updating cors from subscription.
I1229 22:58:18.830447 90384 run.go:843] Updating cors origins: [*]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x4a05c8d]
goroutine 239 [running]:
github.com/dgraph-io/dgraph/graphql/schema.(*field).GetObjectName(...)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/schema/wrappers.go:1117
github.com/dgraph-io/dgraph/graphql/schema.(*field).HasCustomDirective(0xc0000d1320, 0x8, 0x10)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/schema/wrappers.go:965 +0x4d
github.com/dgraph-io/dgraph/graphql/resolve.validateCustomFieldsRecursively(0x5522080, 0xc0000d1320, 0x9, 0x10)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/resolve/resolver.go:555 +0x4c
github.com/dgraph-io/dgraph/graphql/resolve.(*RequestResolver).ValidateSubscription(0xc00038cf00, 0xc000724000, 0x2, 0x0)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/resolve/resolver.go:544 +0x129
github.com/dgraph-io/dgraph/graphql/subscription.(*Poller).AddSubscriber(0xc0004d9050, 0xc000724000, 0xc006403b88, 0x0, 0x0, 0x0)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/subscription/poller.go:71 +0x87
github.com/dgraph-io/dgraph/graphql/web.(*graphqlSubscription).Subscribe(0xc000010350, 0x5507b00, 0xc0000d0ab0, 0xc00130c000, 0xbc, 0xc00061a610, 0x7, 0xc0000d0a50, 0x8, 0x203000, ...)
/ext-go/1/src/github.com/dgraph-io/dgraph/graphql/web/http.go:173 +0x1a7
github.com/dgraph-io/graphql-transport-ws/graphqlws/internal/connection.(*connection).readLoop(0xc0000d0810, 0x5507a40, 0xc000110c80, 0xc00000f900)
/go/pkg/mod/github.com/dgraph-io/graphql-transport-ws@v0.0.0-20200916064635-48589439591b/graphqlws/internal/connection/connection.go:191 +0x71d
github.com/dgraph-io/graphql-transport-ws/graphqlws/internal/connection.Connect(0x550a0c0, 0xc0000ea2c0, 0x54d6fe0, 0xc000010350, 0x0, 0x0, 0x0, 0xced0263f)
/go/pkg/mod/github.com/dgraph-io/graphql-transport-ws@v0.0.0-20200916064635-48589439591b/graphqlws/internal/connection/connection.go:97 +0x209
created by github.com/dgraph-io/graphql-transport-ws/graphqlws.NewHandlerFunc.func1
/go/pkg/mod/github.com/dgraph-io/graphql-transport-ws@v0.0.0-20200916064635-48589439591b/graphqlws/http.go:33 +0x1bc
W1229 22:58:21.109191 90378 sentry_integration.go:140] unable to read CID from file /var/folders/sw/r5b83mfx5xsgz5rxczw519y40000gn/T//dgraph-alpha-cid-sentry open /var/folders/sw/r5b83mfx5xsgz5rxczw519y40000gn/T//dgraph-alpha-cid-sentry: no such file or directory. Skip
[Sentry] 2020/12/29 22:58:21 Sending fatal event [eea86ca9a8764dbab8de18730b0b64a1] to o318308.ingest.sentry.io project: 1805390
[Sentry] 2020/12/29 22:58:22 Buffer flushed successfully.
➜ ~
Error in the React application
ALSO
Dgraph is creating a new folder, which is weird.