pyspark.sql.DataFrame.persist

DataFrame.persist(storageLevel=StorageLevel(True, True, False, False, 1))

Sets the storage level to persist the contents of the DataFrame across operations after the first time it is computed. This can only be used to assign a new storage level if the DataFrame does not have a storage level set yet. If no storage level is specified defaults to (MEMORY_AND_DISK).

Note

The default storage level has changed to MEMORY_AND_DISK to match Scala in 2.0.

New in version 1.3.

pyspark.sql.DataFrame.orderBy pyspark.sql.DataFrame.printSchema