steps of find the bug

start an empty dgraph database

Terminal A: ./dgraph zero

Terminal B: ./alpha --lru_mb 1024

load data

cd data

../dgraph live -f mock.rdf -s mock.schema

run findbug.gql

java -jar dgraph-1.0-SNAPSHOT.jar localhost 9080 findbug.gql 50 3

what did my dgraph-1.0-SNAPSHOT.jar do?

It take 5 arguments.

dgraph-host dgraph-port filename-of-a-query min-length max-run-times

I check the length of response, so I can find it when the response is empty.

If the response is empty , the length of response is < than the min-lenth,

If the response is not empty, the length of response is > than the min-lenth.