[FLINK-36349] ClassNotFoundException due to org.apache.flink.runtime.types.FlinkScalaKryoInstantiator missing

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.0-preview
• Fix Version/s: 2.0-preview
• Component/s: API / Type Serialization System
• Labels: pull-request-available test-stability
• Assignee: xuhuang
• Reporter: Matthias Pohl
• Created: 23/Sep/24 07:21
• Updated: 24/Sep/24 10:17
• Resolved: 24/Sep/24 10:17

Description

This is most likely caused by FLINK-29741 which was recently merged.
https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=62359&view=logs&j=8fd9202e-fd17-5b26-353c-ac1ff76c8f28&t=ea7cf968-e585-52cb-e0fc-f48de023a7ca&l=17558

Sep 23 01:58:51 01:58:50,533 12326 [AsyncOperations-thread-1] INFO  org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer [] - Kryo serializer scala extensions are not available.
Sep 23 01:58:51 java.lang.ClassNotFoundException: org.apache.flink.runtime.types.FlinkScalaKryoInstantiator
Sep 23 01:58:51 	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_292]
Sep 23 01:58:51 	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_292]
Sep 23 01:58:51 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352) ~[?:1.8.0_292]
Sep 23 01:58:51 	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_292]
Sep 23 01:58:51 	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_292]
Sep 23 01:58:51 	at java.lang.Class.forName(Class.java:264) ~[?:1.8.0_292]
[...]

It causes ClosureCleanerITCase to fail in the AdaptiveScheduler test profile.

Issue Links

• is caused by: FLINK-29741 [FLIP-265] Remove all Scala APIs
• is related to: FLINK-33514 FlinkScalaKryoInstantiator class not found in KryoSerializer
• links to: GitHub Pull Request #25378