[SPARK-23799][SQL][FOLLOW-UP] FilterEstimation.evaluateInSet produces wrong stats for STRING #21147
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cc @cloud-fan @wzhfy |
| // use [min, max] to filter the original hSet | ||
| dataType match { | ||
| case _: NumericType | BooleanType | DateType | TimestampType => | ||
| if (ndv.toDouble == 0 || colStat.min.isEmpty || colStat.max.isEmpty) { |
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I think we always have max/min for integral type? cc @wzhfy
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min/max could be None when the table is empty
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min/max can be None if the column contains only null values. This is exactly the case for my query.
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Test build #89815 has finished for PR 21147 at commit
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LGTM |
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retest this please |
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somehow I thought it has passed tests and I has merged it to master... Anyway this is a pretty safe change and I don't think it will break any tests. Let's see the test result later. |
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Test build #89884 has finished for PR 21147 at commit
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The failed |
What changes were proposed in this pull request?
colStat.minANDcolStat.maxare empty for string type. Thus,evaluateInSetshould not return zero when eithercolStat.minorcolStat.max.How was this patch tested?
Added a test case.