SparkContext¶
SparkContext
is a Python class.
JavaGateway¶
SparkContext
defines _gateway
property for a JavaGateway
that is given or launched when _ensure_initialized.
JVMView¶
SparkContext
defines _jvm
property for a JVMView
(py4j) to access to the Java Virtual Machine of the JavaGateway.
_ensure_initialized¶
_ensure_initialized(
cls, instance=None,
gateway=None,
conf=None)
_ensure_initialized
is a @classmethod
.
_ensure_initialized
...FIXME
_ensure_initialized
is used when:
SparkContext
is__init__
andsetSystemProperty
- pyspark/shell.py is launched
Last update: 2021-02-22