Yash Datta created SPARK-3968:
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Summary: Using parquet-mr filter2 api in spark sql, add a custom
filter for InSet clause
Key: SPARK-3968
URL: https://issues.apache.org/jira/browse/SPARK-3968
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 1.1.0
Reporter: Yash Datta
Priority: Minor
Fix For: 1.1.1
The parquet-mr project has introduced a new filter api , along with several
fixes , like filtering on OPTIONAL columns as well. It can also eliminate
entire RowGroups depending on certain statistics like min/max
We can leverage that to further improve performance of queries with filters.
Also filter2 api introduces ability to create custom filters. We can create a
custom filter for the optimized In clause (InSet) , so that elimination happens
in the ParquetRecordReader itself.
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