tflint error encountered while scanning stdout

[pfuhrmann]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

tflint fails due to read error on parallel runs (suspected reason, because on v5 it works).

Expected Behavior

tflint should not fail with the read error.

Super-Linter version

v6.0.0

Relevant log output

22:49:30 [INFO]  go-plugin@v1.6.0/client.go:780: plugin process exited: plugin=/root/.tflint.d/plugins/github.com/terraform-linters/tflint-ruleset-azurerm/0.25.1/tflint-ruleset-azurerm id=11159
  Error: 0 [ERROR] go-plugin@v1.6.0/client.go:804: error encountered while scanning stdout: error="read |0: file already closed"
  22:49:30 [INFO]  go-plugin@v1.6.0/client.go:780: plugin process exited: plugin=/root/.tflint.d/plugins/github.com/terraform-linters/tflint-ruleset-google/0.26.0/tflint-ruleset-google id=11165

Steps To Reproduce

1. Have a multiple folders with TF configs
2. Run super-linter in GA
3. See the log above

Anything else?

• I suspect this is the reason: Build the file list and run linters in parallel #5177
• Tested on v5.7.2 and it works fine.
• Tested also locally using Docker image, same issue on v6.0.0
• Could we add perhaps an option to disable parallel runs or to configure parallelism?

[ferrarimarco]

Hi @pfuhrmann !

Thanks for providing these details. We probably need a few more data points.

Can you please:

• Share the command that you used to run super-linter locally in order to reproduce the issue?
• Run super-linter locally with the CREATE_LOG_FILE variable set to true, and attach the log file here so we can have a look?
• Share a bit more about the structure of your repository (not necessarily the contents, if it's private)? We need this to build a test case to reproduce the issue.

Thanks!

[pfuhrmann]

1. docker run --rm -e RUN_LOCAL=true -e DEFAULT_BRANCH=main -v "$(pwd)":/tmp/lint ghcr.io/super-linter/super-linter:v6.0.0
2. Sorry, I cannot do that because it would contain sensitive information which I cannot share.
3. We have a single folder in the repository called terraform which contains ~20 additional folders, each containing HCL files (separate TF states, handling different parts of infrastructure). It's ~10k (HCL) LOC. Please ask for more details if you need to know anything more specific.

With all the above said, this might be not an issue with super-linter. Found out this: hashicorp/go-plugin#298, and it got recently upgraded in tflint: terraform-linters/tflint#1846.

[ferrarimarco]

Ah! Thanks for the research. That might be it :)

Closing this for now.