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SAMPLE BY FILL with array column aggregates crashes with UnsupportedOperationException

SAMPLE BY FILL with array column aggregates crashes with UnsupportedOperationException: a task in LegoFlow-SWE (Harbor dataset). When using SAMPLE BY with FILL(NULL) or FILL(value) on an array column with aggregate functions like last() or first() , the query crashes with an…

The task

When using `SAMPLE BY` with `FILL(NULL)` or `FILL(value)` on an array column with aggregate functions like `last()` or `first()`, the query crashes with an `UnsupportedOperationException` at `Record.getArray()`. This occurs because the fill mechanism does not handle array column types correctly.

Part of Lego-X/LegoFlow-SWE.