Hemanth Boyina created SPARK-59861:
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Summary: Propagate trusted DataSource V2 primary keys as Catalyst
distinct keys
Key: SPARK-59861
URL: https://issues.apache.org/jira/browse/SPARK-59861
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.4.0
Reporter: Hemanth Boyina
Data Source V2 tables can expose primary-key constraints through
Table.constraints(). However, DataSourceV2Relation and DataSourceV2ScanRelation
do not currently expose trusted primary keys through Catalyst's distinctKeys.
As a result, existing optimizer rules cannot use DSv2 primary-key metadata to
eliminate redundant duplicate-removal operations.
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