Increase heap size of the generate compilation process

[divyenduz]

Alternate continuation of #254

The scope of the #611 (which was to be the next step in #254) is big enough that we want to tackle that after prisma/prisma-client-js#238

This issue offers an alternative short term solution to unblock people from #254 is to increase the heap size of the generate process that runs the TS compiler.

[williamluke4]

Will this make it in time for Preview 14?

[divyenduz]

It is targeted for Preview 14 yes but preview 14 lands on 10th October (because we are experimenting with 2 week sprints)

[timsuchanek]

Released in the latest preview. We increased the heap size to 2048 mb. Please let us know, if that already helps with your bigger schemas 🙏

[williamluke4]

Hi @timsuchanek, I just tried again using Preview 14 but I'm still receiving the error spawn E2BIG.
The Schema that I'm trying to introspect is running on a Heroku Postgres DB (140 Tables, 8.34 MB)

ERROR  Introspection failed:
Error: Command failed with exit code 7 (E2BIG): /home/will/.nvm/versions/node/v1
1.15.0/lib/node_modules/prisma2/query-engine-linux-glibc-libssl1.1.0 cli --dmmf_
to_dml 

[williamluke4]

Let me know if there is any additional info that I can provide

[williamluke4]

Preview 14.1 Yields the same result.
After doing some digging through the output I have found various issues such as

"documentation": "Field name normalization failed because of a conflicting field name."

"documentation": "Field name normalization failed because of a conflicting field name.\\nCould not auto-generate backwards relation field, field name would be ambiguous.\\nPlease specify the name of this field and the name of the relation manually.\\nIt references PropertyAccess.nearestInternationalAirport."

I don't know if these are a symptom or a cause of the error?

[divyenduz]

We increased this further to 8096 here: e04d81b

Closing this issue. Please ping me via a comment on this issue if you think that this issue should not be closed.

Note that this is a temporary fix to unblock users, the proper fix is tracked here: #611