KSQL 6.0.0.300 - 2301 (EEP 9.1.0) Release Notes

The notes below relate specifically to the HPE Ezmeral Data Fabric Distribution for Apache Kafka.
Version 6.0.0.300
Release Date January 2023
HPE Version Interoperability See EEP Components and OS Support.
Source on GitHub https://github.com/mapr/ksql
GitHub Release Tag 6.0.0.300-eep-910
Maven Artifacts https://repository.mapr.com/maven/
Package Names See Package Names for Ecosystem Packs (EEPs).

New in This Release

KSQL 6.0.0.300 - 2301 introduces the following enhancements or HPE platform-specific behavior changes:
  • Updated protobuf-java to 3.21.9
  • Updated ANTL4 to 4.9.3
  • Bug fixes

Fixes

This HPE release includes the following fixes on the base release:
GitHub Commit Number Date (YYYY-MM-DD) Fix Number and Description
900b807f64 2023-01-18 KAFKA-929 Update ANTL4 to antlr4-runtime-4.9.3
63361baf4d 2022-12-27 KAFKA-919 Upgrade protobuf version to 3.21.9
db057a4fc3 2022-09-15 chore: upgrade garbage collector to g1 (#9556)
For complete details, refer to the commit log for this project in Github.

Known Issues and Limitations

  • You cannot upgrade KSQL from 4.x to 5.x/6.x versions; you must uninstall KSQL 4.x and then install the newer version.
  • Concurrent queries on a table can result in a null pointer exception.
  • The SHOW TOPICS command does not print information about active consumers and consumer groups.
  • MAPR-KAFKA-437: Dropping streams/tables may take up to five minutes. This issue is caused by MS-915: “MapR Stream application hangs inside cycle”
  • MAPR-KAFKA-427: KSQL server periodically responds with a 403 code only. This issue is caused by MS-915: “MapR Stream application hangs inside cycle”

Resolved Issues

  • None.