Nota
L-aċċess għal din il-paġna jeħtieġ l-awtorizzazzjoni. Tista’ tipprova tidħol jew tibdel id-direttorji.
L-aċċess għal din il-paġna jeħtieġ l-awtorizzazzjoni. Tista’ tipprova tibdel id-direttorji.
Persists the DataFrame with the default storage level (MEMORY_AND_DISK_DESER).
Syntax
cache()
Returns
DataFrame: Cached DataFrame.
Notes
The default storage level has changed to MEMORY_AND_DISK_DESER to match Scala in 3.0.
Cached data is shared across all Spark sessions on the cluster.
Examples
df = spark.range(1)
df.cache()
# DataFrame[id: bigint]
df.explain()
# == Physical Plan ==
# InMemoryTableScan ...