Gengliang Wang created SPARK-25702:
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Summary: Push down filters with `Not` operator in Parquet
Key: SPARK-25702
URL: https://issues.apache.org/jira/browse/SPARK-25702
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: Gengliang Wang
Currently, in ParquetFilters, predicates inside `Not` operator are considered
as unable to perform partial push down.
However, the following cases is still possible for push down:
1. `Not(Or(left, right))` can be conversed as `And(Not(left), Not(right))`
2. `Not(Not(pred))` can be conversed as `pred`
Both cases should be quite trivial, since the `Not` operator should be pushed
down by optimization rule `BooleanSimplification` already.
But I think it should be good to handle such cases in Parquet data source
module as well.
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