[geruh]

This PR throws when an existence check fails. tableExists returned false on every exception, so DROP TABLE IF EXISTS skipped Glue tables whose 0.4.0 jar left tableExists unimplemented. namespaceExists called describeNamespace on UNSUPPORTED.

• A missing table or namespace stays false. Any other LanceNamespaceException is thrown.
• Spark depends on lance-namespace-impl 0.4.2.

Testing

- ./mvnw checkstyle:check spotless:check -pl lance-spark-base_2.12

[claude]

Claude Code Review

This pull request is from a fork — automated review is disabled. A repository maintainer can comment @claude review to run a one-time review.

[lance-gatekeeper]

⚠️ Gate recommendation: approve with a non-blocking risk.

Propagating failed existence checks prevents silent DROP TABLE IF EXISTS skips while preserving missing-object behavior. Version 0.4.2 includes the upstream existence-method fix, supporting removal of the temporary Glue fallback. The remaining risk is the absence of committed regression coverage for the changed error contract.