Gengliang Wang created SPARK-27384:
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Summary: File source V2: Prune unnecessary partition columns
Key: SPARK-27384
URL: https://issues.apache.org/jira/browse/SPARK-27384
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
When scanning file sources, we can prune unnecessary partition columns on
constructing input partitions, so that:
1. Reduce the data transformation from Driver to Executors
2. Make it easier to implement columnar batch readers, since the partition
columns are already pruned.
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