DataFrameWriter.
save
Saves the contents of the DataFrame to a data source.
DataFrame
The data source is specified by the format and a set of options. If format is not specified, the default data source configured by spark.sql.sources.default will be used.
format
options
spark.sql.sources.default
path – the path in a Hadoop supported file system
format – the format used to save
mode –
specifies the behavior of the save operation when data already exists.
append: Append contents of this DataFrame to existing data.
append
overwrite: Overwrite existing data.
overwrite
ignore: Silently ignore this operation if data already exists.
ignore
error or errorifexists (default case): Throw an exception if data already exists.
error
errorifexists
partitionBy – names of partitioning columns
options – all other string options
>>> df.write.mode("append").save(os.path.join(tempfile.mkdtemp(), 'data'))
New in version 1.4.