GoFSH Hangs on Instance Conversion

[markkramerus]

I was trying to convert the UTG IG to FSH, but GoFSH hangs when it reaches "Processing Instances..." phase.

The repo to check out is HL7/UTG@208a5ab

The command used to launch the process is: gofsh -t json-and-xml -s single-file

PS - After waiting 15 minutes or so, it looks like the process is still alive, but moving extremely slowly. So call it no quite dead, but nearly dead.

[cmoesel]

Thanks for reporting. Oddly enough, someone else just reported a similar issue on chat.fhir.org yesterday: https://chat.fhir.org/#narrow/stream/179166-implementers/topic/GoFSH.20gets.20stuck

[markkramerus]

Some instances just appear to take a LONG time. It was stuck for about 20 minutes in the middle of instance conversion, did about 20 more, and now it is stuck again. It isn't dead, just really slow. Need to throw it into a debugger.

[markkramerus]

New information -- there are some huge instances of BUNDLE in the IG. Hundreds of resources in the bundles. I think the "hang" is really the time to create the honkin' huge bundles.
Does every IG have bundles like this?

[markkramerus]

Here's a zip file of the gofsh directory resulting from conversion of UTC IG.
gofsh.zip

[markkramerus]

Closing... Decided this is not a bug, just a consequence of very large instances in this IG.