In #2884, Terraform would hang on graphs with an orphaned resource
depended on an orphaned module.
This is because orphan module nodes (which are dependable) were getting
expanded (replaced) with GraphNodeBasicSubgraph nodes (which are _not_
dependable).
The old `graph.Replace()` code resulted in GraphNodeBasicSubgraph being
entered into the lookaside table, even though it is not dependable.
This resulted in an untraversable edge in the graph, so the graph would
hang and wait forever.
Now, we remove entries from the lookaside table when a dependable node
is being replaced with a non-dependable node. This means we lose an
edge, but we can move forward. It's ~probably~ never correct to be
replacing depenable nodes with non-dependable ones, but this tweak
seemed preferable to tossing a panic in there.
We weren't marking skipped nodes as failing, so any
grandchild-and-deeper dependencies would still evaluate.
For example:
A -> B -> C -> D
If B failed, C would be skipped, but D would still be evaluated.
This fixes the behavior so C, D, and any further descendents will all be
skipped when B fails.
Addresses crashing aspect of #2955 and likely a lot of other confusing
failure modes.
* upstream/master:
Update CHANGELOG.md
Update CHANGELOG.md
provider/aws: allow external ENI attachments
Update AWS provider documentation
docs/aws: Fix example of aws_iam_role_policy
provider/aws: S3 bucket test that should fail
provider/aws: Return if Bucket not found
Update CHANGELOG.md
Update CHANGELOG.md
helper/schema: record schema version when destroy fails
settings file is not required
provider/azure: Allow settings_file to accept XML string
add note to aws_iam_policy_attachment explaining its use/limitations
docs: clarify template_file path information
google: Sort resources by alphabet in docs
Support go get in go 1.5
Update CHANGELOG.md
aws_network_interface attachment block is not required
provider/aws: Fix issue in Security Group Rules where the Security Group is not found
If Terraform creates an ENI and it's attached out of band, Terraform
should not attempt to remove the attachment on subsequent runs.
fixes#2436fixes#2881
Clint