terraform destroy fails due to empty coalesce in output about terraform-aws-tfstate-backend HOT 2 CLOSED

So upon further thought, adding the empty string list is a hack for backwards compat with terraform 0.11, because the 0.12 coalescelist behavior is correct: the function returns the first non-empty list so if they are all empty, it does not make sense to return anything and it should raise an exception.

The deeper issues are:

1. that terraform tries to render outputs as part of a destroy, which doesn't make sense in general and is likely to have other similar issues with undefined objects. See my comment hashicorp/terraform#25390 (comment).
2. that coalescelist() is defined that way; probably the function should be "returns the first non-empty list, or an list list if they are all empty". Problem there is this will cause outer code to break (eg the element(coalesced-list, 0) to break in 0.12, so it doesnt' really solve the problem.

from terraform-aws-tfstate-backend.

This issue seems resolved @schollii . If not, please comment the ticket again.

Thanks again for the contribution.

from terraform-aws-tfstate-backend.