DeltaSparkSessionExtension¶

DeltaSparkSessionExtension is used to register (inject) the following extensions to a SparkSession:

• Delta SQL support (using DeltaSqlParser)
• PreprocessTableRestore logical resolution rule
• DeltaAnalysis logical resolution rule
• DeltaUnsupportedOperationsCheck
• PreprocessTableUpdate logical resolution rule
• PreprocessTableMerge logical resolution rule
• PreprocessTableDelete logical resolution rule
• PrepareDeltaScan logical optimization rule

DeltaSparkSessionExtension is registered using spark.sql.extensions configuration property (while creating a SparkSession in a Spark application).