[FLINK-18628] Invalid error message for overloaded methods with same parameter name

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.11.0
• Fix Version/s: 1.11.2, 1.12.0
• Component/s: Table SQL / API
• Labels: pull-request-available
• Assignee: Timo Walther
• Reporter: Timo Walther
• Created: 17/Jul/20 12:39
• Updated: 21/Jul/20 06:38
• Resolved: 21/Jul/20 06:38

Description

If a function has overloaded evaluation methods but same argument names, this leads to a confusing error message where types are missing:

Caused by: org.apache.flink.table.api.ValidationException: Invalid input arguments. Expected signatures are:
test-catalog.TEST_DB.myScalarFunc(a => )
	at org.apache.flink.table.types.inference.TypeInferenceUtil.createInvalidInputException(TypeInferenceUtil.java:190)
	at org.apache.flink.table.planner.functions.inference.TypeInferenceOperandChecker.checkOperandTypesOrError(TypeInferenceOperandChecker.java:131)
	at org.apache.flink.table.planner.functions.inference.TypeInferenceOperandChecker.checkOperandTypes(TypeInferenceOperandChecker.java:89)
	... 79 common frames omitted
Caused by: org.apache.flink.table.api.ValidationException: Invalid input arguments.
	at org.apache.flink.table.types.inference.TypeInferenceUtil.inferInputTypes(TypeInferenceUtil.java:467)
	at org.apache.flink.table.types.inference.TypeInferenceUtil.adaptArguments(TypeInferenceUtil.java:123)
	at org.apache.flink.table.types.inference.TypeInferenceUtil.adaptArguments(TypeInferenceUtil.java:102)
	at org.apache.flink.table.planner.functions.inference.TypeInferenceOperandChecker.checkOperandTypesOrError(TypeInferenceOperandChecker.java:126)
	... 80 common frames omitted

Issue Links

• links to: GitHub Pull Request #12928