Fix DoubleRange resolution for NaN values #24315
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core/trino-spi/src/main/java/io/trino/spi/statistics/DoubleRange.java
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core/trino-spi/src/main/java/io/trino/spi/statistics/DoubleRange.java
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sopel39
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Description
Connector objects may contain columns that contain only
NaNvalues. When these values are passed toDoubleRangector, an exception occurs. Depending on the context, this may lead to either silent fallback to empty stats (e.g.,SHOW STATSwill give the user misleading values), or cause exceptions within an optimizer.This PR fixes the problem, normalizing ranges with NaN to empty range.
Additional context and related issues
Originally this problem was observed during careful analysis of
BaseIcebergConnectorTest.testPartitionedByDoubleWithNaNbehavior. One may think that this is an Iceberg issue, which we may fix around Iceberg'sTableStatisticsReader.makeTableStatisticsclass. However, other engines may also legitimately expose NaN as their stats, so it seems that it is better to fix it completely at the SPI level.Release notes
( ) This is not user-visible or is docs only, and no release notes are required.
( ) Release notes are required. Please propose a release note for me.
(x) Release notes are required, with the following suggested text: