DataSourceV2ScanRelation Leaf Logical Operator¶

DataSourceV2ScanRelation is a leaf logical operator and a NamedRelation.

Creating Instance¶

DataSourceV2ScanRelation takes the following to be created:

• DataSourceV2Relation
• Scan
• Output Schema (AttributeReferences)

DataSourceV2ScanRelation is created when:

• V2ScanRelationPushDown logical optimization is executed (for a DataSourceV2Relation)

Name¶

name: String

name is part of the NamedRelation abstraction.

name requests the DataSourceV2Relation for the Table that is in turn requested for the name.

Simple Node Description¶

simpleString(
  maxFields: Int): String

simpleString is part of the TreeNode abstraction.

simpleString is the following (with the output schema and the name):

RelationV2[output] [name]

Statistics¶

computeStats(): Statistics

computeStats is part of the LeafNode abstraction.

computeStats...FIXME

Execution Planning¶

DataSourceV2ScanRelation is planned by DataSourceV2Strategy execution planning strategy to the following physical operators:

• RowDataSourceScanExec
• BatchScanExec