[core] Fix silent data corruption due to overflow in FieldProductAgg#7906

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ArnavBalyan:arnavb/fix-product-overflow

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ArnavBalyan commented May 19, 2026 •

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Purpose

FieldProductAgg multiplies integers without overflow detection.
Accumulator silently wraps corrupting downstream product aggregations.
Throw on overflow using Math multiplyExact and range checks.

Tests

UT


          upadte

53057d1

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ArnavBalyan commented May 19, 2026

cc @JingsongLi thanks! :)

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