ACL bug - The groot user is gone.

[MichelDiz]

What version of Dgraph are you using?

v20.03.3
v20.03.1

Works fine in v1.1.0

Have you tried reproducing the issue with the latest release?

Master, but the master has breaking changes for now.

What is the hardware spec (RAM, OS)?

32GB, Darwin

Steps to reproduce the issue (command/config used to run Dgraph).

dgraph zero

dgraph alpha  -o 100 --acl_secret_file ./key

Test on v1.2.5

dgraph zero

dgraph alpha --acl_secret_file ./key

➜  ~ dgraph acl -a localhost:9080 mod -u groot --new_password
[Decoder]: Using assembly version of decoder

Running transaction with dgraph endpoint: localhost:9080
Current password for groot:
Unable to modify: unable to get dgo client: unable to login to the groot account: rpc error: code = Unknown desc = Authentication from address [::1]:56051 failed: unable to authenticate through password: user not found for id groot

Expected behaviour and actual result.

PS. I think it is definitely related to the SPAMMING logs in GraphQL tasks. Cuz I had to force the shutdown.

access_ee.go:402 Successfully upserted the groot account

We should be able to run the go test in https://github.com/dgraph-io/dgo

Apparently it is or related to something in GraphQL bg tasks. Because the first time there was a bug with GraphQL SPAMMING logs. And with that, the command "upserted the groot account" was ignored.

My second theory has to do with offset_port. When I didn't use offset_port it started to work normally in versions that weren't working. Then, once it works again, I disconnect the cluster and go back to offset_port = 100 to test again (I need to use 8180 in go tests). And the problem happens again.

The "workaround"

What is weird is that this workaround sometimes works, sometimes I have to wait hours to make it work or reboot the system.

1 - Downgrade Dgraph to v1.1.0

curl https://get.dgraph.io -sSf | VERSION=v1.1.0 bash

dgraph alpha --acl_secret_file ./enc_key_file --lru_mb 4000

LOGs

Serving tablet for: dgraph.group.acl
Done schema update predicate:"dgraph.group.acl" value_type:STRING
Successfully upserted the groot account
...
 Login request from: [::1]:60757

then, kill it and upgrade to v20.03.0

curl https://get.dgraph.io -sSf | VERSION=v20.03.0 bash

[minhaj-shakeel]

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