RowDataSourceScanExec Physical Operator
RowDataSourceScanExec is a DataSourceScanExec for scanning data from a relation.
RowDataSourceScanExec is created for LogicalRelation with different kinds of relations (in DataSourceStrategy execution planning strategy).
Creating RowDataSourceScanExec Instance
RowDataSourceScanExec takes the following when created:
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Output schema attributes
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RDD of internal binary rows