[Backport] Fix HllSketchHolderObjectStrategy#isSafeToConvertToNullSketch #15861
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…e#15860) * Fix HllSketchHolderObjectStrategy#isSafeToConvertToNullSketch. The prior code from apache#15162 was reading only the low-order byte of an int representing the size of a coupon set. As a result, it would erroneously believe that a coupon set with a multiple of 256 elements was empty.
LakshSingla
approved these changes
Feb 8, 2024
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Backport of 21a97f4 to 29.0.0