[rdf4j-dev] RDF4J 6.1.0 replaces the planned 6.0.2 release

[Håvard Ottestad <hmottestad@xxxxxxxxx>]

Hi everyone,

A quick clarification about the release numbering: the bug-fix release originally planned as 6.0.2 was released as 6.1.0.

This is still a bug-fix release and contains no new features. The version bump reflects a breaking API change needed to fix a potential deadlock during concurrent initialization of CloseableIteration and EmptyIteration (GH-6020).

The fix moves EMPTY_STATEMENT_ITERATION from CloseableIteration to the new IterationConstants class in the same package. If your code references this constant, update the reference or static import and recompile. Existing binaries referencing the old field can throw NoSuchFieldError; replacing the RDF4J JARs alone is insufficient for those applications.

The release also includes important LMDB fixes addressing potential data loss, so upgrading is recommended.

Cheers,
Håvard