DeltaFileFormat¶

DeltaFileFormat is an abstraction of format metadata that specify the file format of a delta table.

Contract¶

FileFormat¶

fileFormat: FileFormat

FileFormat (Spark SQL) of this delta table

Default: DeltaParquetFileFormat (with the columnMappingMode and the schema of the given Metadata)

Used when:

• DeltaLog is requested for a relation (in batch queries) and a DataFrame
• DeltaCommand is requested for a relation
• MergeIntoCommand is requested to buildTargetPlanWithFiles
• TransactionalWrite is requested to write data out

Metadata¶

metadata: Metadata

Current Metadata

Used when:

• DeltaFileFormat is requested for the FileFormat

SparkSession¶

spark: SparkSession

Current SparkSession (Spark SQL)

Implementations¶

• DeltaLog