CI: Verify on Grafana 12.4.0

[amotl]

About

Grafana 12.4.0 was released on 2026-02-24.

• https://grafana.com/docs/grafana/latest/whatsnew/whats-new-in-v12-4/
• https://github.com/grafana/grafana/blob/main/CHANGELOG.md#1240-2026-02-24

Status

The patch currently fails CI on the new test matrix slot. It looks like Grafana 12.4 is a little bit different than previous releases.

test/integration/test_examples.py::test_datasource_health_probe[cratedb] FAILED

Details

ERROR: line 1:8: mismatched input '<EOF>'

-- CI run #22436383371

References

• PostgreSQL compatibility: SQL statement containing only comment not accepted crate/crate#16501

[coderabbitai]

Walkthrough

This PR updates the test infrastructure to include and activate Grafana version 12.4.0 across CI configuration, integration test environment variables, and Docker Compose setup. The active test version is switched from 12.3.4 to 12.4.0, with a corresponding changelog entry documenting the CI verification.

Changes

Cohort / File(s)	Summary
CI and Integration Test Configuration .github/workflows/test.yml, test/integration/.env, test/integration/compose.yml	Updated Grafana version from 12.3.4 to 12.4.0 across CI test matrix, integration environment configuration, and Docker Compose service image tag.
Documentation CHANGELOG.md	Added CI verification note under unreleased section for Grafana 12.4.0.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐰 From 12.3.4 we hop on by,
To 12.4.0, reaching for the sky!
CI gates expanded, versions aligned,
Grafana testing refined!
✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly and clearly describes the main objective of the PR—to add Grafana 12.4.0 verification to CI, which aligns perfectly with all the changeset modifications.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The pull request description clearly describes the purpose of updating CI to verify compatibility with Grafana 12.4.0, includes relevant release information and references.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch grafana-12.4

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.34%. Comparing base (19bd702) to head (cddb68c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #257   +/-   ##
=======================================
  Coverage   92.34%   92.34%           
=======================================
  Files          27       27           
  Lines        1828     1828           
=======================================
  Hits         1688     1688           
  Misses        140      140           

Flag	Coverage Δ
unittests	92.34% <ø> (ø)

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[amotl]

CrateDB is compatible with Grafana 12.4.0 again. CI signals success now. Thanks, @mfussenegger.

• Add support for empty statements containing comments crate/crate#19095