Ensure CI pipelines thoroughly verify build outputs and maintain consistency across different build tools and configurations. This prevents broken builds from reaching contributors and ensures reliable deployment artifacts.

Key practices:

Cross-tool verification: When using multiple build tools (Maven, SBT), verify that both produce consistent, working artifacts
Proper build phases: Use correct Maven lifecycle phases (e.g., package test instead of just test) to ensure proper classpath resolution
Rigorous output testing: Test the actual distribution artifacts, not just intermediate build outputs

Example from Maven workflow:

# Ensure proper Maven phase ordering for integration tests
./build/mvn $MAVEN_CLI_OPTS -pl sql/connect/client/jvm,sql/connect/client/integration-tests,sql/connect/common,sql/connect/server package test -fae

This approach protects contributors’ daily development by catching build inconsistencies early and making it easier to identify offending commits when builds break.

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