Hazelcast Release Notes Releases 5.1.3 5.1.3 Release Notes Version 5.1 5.2-SNAPSHOT 5.1 5.0 Enhancements Improved connection handling. #21641 Fixes When the hazelcast.socket.buffer.direct property is enabled, clusters no longer throw exceptions in response to text protocols such as the REST API. #21700 Releases 5.1.2