Hello @WolfgangFahl. Your issue is something we’re interested in and have been actively exploring. We have had another issue reported on Discuss specifically on Docker Desktop (hyperkit/vpnkit), and found that is was not reproducible on Docker Machine (virtualbox). So we’re curious if this reproduces on Docker Machine. Also, we’re exploring angle with pydgraph client could be an additional factor (or python environment), and so I have a colleague actively looking into this. On TravisCI, this may provide a consistent control to reproduce the issue, but not sure what I can do as far as debugging (traces, profiles, logs) with the dgraph services. So I am looking for a non-Travis way to get to the same results, to see if can get deeper insight as to what is happening.
For documentation, this is something we are both aware and actively working on. I cannot emphasize how vital this is to us. I can definitely relate to the StackExchange point, as I experienced this myself with other projects; this is something I’ll discuss internally. On the topic on a Gremlin, SPARQL, and others (e.g. Cypher), these are not on the immediate roadmap. The current language focus will be around spec GraphQL.