pytd.writer.SparkWriter¶
-
class
pytd.writer.
SparkWriter
(td_spark_path=None, download_if_missing=True, spark_configs=None)[source]¶ A writer module that loads Python data to Treasure Data.
- Parameters
td_spark_path (str, optional) – Path to td-spark-assembly_x.xx-x.x.x.jar. If not given, seek a path
TDSparkContextBuilder.default_jar_path()
by default.download_if_missing (bool, default: True) – Download td-spark if it does not exist at the time of initialization.
spark_configs (dict, optional) – Additional Spark configurations to be set via
SparkConf
’sset
method.
-
td_spark_path
¶ Path to td-spark-assembly_x.xx-x.x.x.jar.
- Type
str
-
download_if_missing
¶ Download td-spark if it does not exist at the time of initialization.
- Type
bool
-
spark_configs
¶ Additional Spark configurations to be set via
SparkConf
’sset
method.- Type
dict
-
td_spark
¶ Connection of td-spark
-
__init__
(td_spark_path=None, download_if_missing=True, spark_configs=None)[source]¶ Initialize self. See help(type(self)) for accurate signature.
Methods
__init__
([td_spark_path, …])Initialize self.
close
()Close a PySpark session connected to Treasure Data.
from_string
(writer, **kwargs)write_dataframe
(dataframe, table, if_exists)Write a given DataFrame to a Treasure Data table.
Attributes
-
__init__
(td_spark_path=None, download_if_missing=True, spark_configs=None)[source] Initialize self. See help(type(self)) for accurate signature.
-
property
closed
¶
-
write_dataframe
(dataframe, table, if_exists)[source]¶ Write a given DataFrame to a Treasure Data table.
This method internally converts a given
pandas.DataFrame
into Spark DataFrame, and directly writes to Treasure Data’s main storage so-called Plazma through a PySpark session.- Parameters
dataframe (
pandas.DataFrame
) – Data loaded to a target table.table (
pytd.table.Table
) – Target table.if_exists ({'error', 'overwrite', 'append', 'ignore'}) –
What happens when a target table already exists.
error: raise an exception.
overwrite: drop it, recreate it, and insert data.
append: insert data. Create if does not exist.
ignore: do nothing.