statefile: Ignore unknown check results on decode #33818
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Terraform 1.5 introduced a new check result kind, which causes a decode failure when read by Terraform 1.3 and 1.4. This means that a 1.5+ state file cannot be read by the `terraform_remote_state` data source in 1.3 or 1.4 series. Aborting state decode at this point isn't strictly necessary, as we don't stand to lose important data by failing to round-trip these check results. Instead we can ignore those check results, allowing decode to elide them from the state. This has no negative effect on the remote state data source, which only exposes root module outputs anyway.
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Reminder for the merging maintainer: if this is a user-visible change, please update the changelog on the appropriate release branch. |
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Terraform 1.5 introduced a new check result kind, which causes a decode failure when read by Terraform 1.3 and 1.4. This means that a 1.5+ state file cannot be read by the
terraform_remote_statedata source in 1.3 or 1.4 series.Aborting state decode at this point isn't strictly necessary, as we don't stand to lose important data by failing to round-trip these check results. Instead we can ignore those check results, allowing decode to elide them from the state.
This has no negative effect on the remote state data source, which only exposes root module outputs anyway.
Manual backport of #33815 because the robot failed.
Target Release
1.5.7
Draft CHANGELOG entry
BUG FIXES
terraform_remote_state: prevent future possible incompatibility with states which include unknowncheckblock result kinds.