This release delivers Ververica Runtime (VVR) 4.0.16, built on Apache Flink 1.13. It contains only bug fixes — no new features.
Important
If your deployments run on VVR 4.X, update to VVR 4.0.16 immediately to maintain production stability.
Fixed issues
VVR 4.0.16 backports fixes from the Apache Flink community and resolves additional issues found in the VVR 4.X line.
| Issue | Description |
|---|---|
| FLINK-28265 | When network jitter occurs, the serialized CompletedCheckpoint file is deleted. This causes a FileNotFound error during failover, preventing automatic recovery. This fix was originally released in Apache Flink 1.16.0 and 1.15.3, and in VVR 6.0.2. It is now backported to VVR 4.0.16 for users on the VVR 4.X line, as potential major risks exist in deployment operations due to this issue. |
| Hudi-4907 | Resolved a bug from the Apache Flink community. |
| SQL Server | Fixed performance and stability issues in the SQL Server connector. |
| ClassCastException | Fixed an error that appeared during deployment verification: java.lang.ClassCastException: org.codehaus.janino.CompilerFactory cannot be cast. |