pyspark.RDD.cache

RDD.cache() → pyspark.rdd.RDD[T]

Persist this RDD with the default storage level (MEMORY_ONLY).

New in version 0.7.0.

Returns

RDD

The same RDD with storage level set to MEMORY_ONLY

See also

RDD.persist()

RDD.unpersist()

RDD.getStorageLevel()

Examples

>>> rdd = sc.range(5)
>>> rdd2 = rdd.cache()
>>> rdd2 is rdd
True
>>> str(rdd.getStorageLevel())
'Memory Serialized 1x Replicated'
>>> _ = rdd.unpersist()

previous

pyspark.RDD.barrier

next

pyspark.RDD.cartesian