Chen Zou created SPARK-34694:
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Summary: Improve Spark SQL Source Filter to allow pushdown of
filters span multiple columns
Key: SPARK-34694
URL: https://issues.apache.org/jira/browse/SPARK-34694
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.1.1, 3.1.0, 3.0.2, 3.0.1, 3.0.0
Reporter: Chen Zou
The current org.apache.spark.sql.sources.Filter abstract class only allows
pushdown of filters on single column or sum of products of multiple such
single-column filters.
Filters on multiple columns cannot be pushed down through this Filter subclass
to source, e.g. from TPC-H benchmark on lineitem table:
(l_commitdate#11 < l_receiptdate#12)
(l_shipdate#10 < l_commitdate#11)
The current design probably originates from the point that columnar source has
a hard time supporting these cross-column filters. But with batching
implemented in columnar sources, they can still support cross-column filters.
This issue tries to open up discussion on a more general Filter interface to
allow pushing down cross-column filters.
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