Martin Grund created SPARK-44505:
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Summary: DataSource v2 Scans should not require planning the input
partitions on explain
Key: SPARK-44505
URL: https://issues.apache.org/jira/browse/SPARK-44505
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.4.0
Reporter: Martin Grund
Right now, we will always call `planInputPartitions()` for a DSv2
implementation even if there is no spark job run but only explain.
We should provide a way to avoid scanning all input partitions just to
determine if the input is columnar or not. The scan should provide an override.
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