Stepan Stepanishchev created FLINK-38586:
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Summary: ClassCastException when using Delta Join with lookup cache
Key: FLINK-38586
URL: https://issues.apache.org/jira/browse/FLINK-38586
Project: Flink
Issue Type: Bug
Components: Table SQL / Runtime
Affects Versions: 2.1.0
Reporter: Stepan Stepanishchev
Fix For: 2.1.0
Attachments: image-2025-10-29-16-19-28-460.png
Using delta join with lookup cache throws class cast exception. This happens
because of this particular line:
!image-2025-10-29-16-19-28-460.png|width=858,height=373!
We check lookupFunction, but cast temporalTable. Not a single DeltaJoinTest
covers these two ifs.
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