pyspark.sql.DataFrame.checkpoint¶

DataFrame.checkpoint(eager: bool = True) → pyspark.sql.dataframe.DataFrame[source]¶

Returns a checkpointed version of this DataFrame. Checkpointing can be used to truncate the logical plan of this DataFrame, which is especially useful in iterative algorithms where the plan may grow exponentially. It will be saved to files inside the checkpoint directory set with SparkContext.setCheckpointDir().

New in version 2.1.0.

Parameters

eagerbool, optional, default True: Whether to checkpoint this DataFrame immediately.

Returns

DataFrame: Checkpointed DataFrame.

Notes

This API is experimental.

Examples

>>> import tempfile
>>> df = spark.createDataFrame([
...     (14, "Tom"), (23, "Alice"), (16, "Bob")], ["age", "name"])
>>> with tempfile.TemporaryDirectory() as d:
...     spark.sparkContext.setCheckpointDir("/tmp/bb")
...     df.checkpoint(False)
DataFrame[age: bigint, name: string]

pyspark.sql.DataFrame.cache

pyspark.sql.DataFrame.coalesce