Persist Spark DataFrame/RDD

This node persists (caches) the incoming SparkDataFrame/RDD using the specified persistence level. The different storage levels are described in detail in the Spark documentation .

Caching Spark DataFrames/RDDs might speed up operations that need to access the same DataFrame/RDD several times e.g. when working with the same DataFrame/RDD within a loop body in a KNIME workflow.

Input ports

1. Type: Spark Data
   Spark DataFrame/RDD
   Spark DataFrame/RDD to persist.

Output ports

1. Type: Spark Data
   Persisted Spark DataFrame/RDD
   The persisted Spark DataFrame/RDD.