docs/source/user-guide/configuration.rst

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Configuration
=============

Let's look at how we can configure DataFusion. When creating a :code:`SessionContext`, you can pass in
a :code:`SessionConfig` and :code:`RuntimeConfig` object. These two cover a wide range of options.

.. code-block:: python

    from datafusion import RuntimeConfig, SessionConfig, SessionContext

    # create a session context with default settings
    ctx = SessionContext()
    print(ctx)

    # create a session context with explicit runtime and config settings
    runtime = RuntimeConfig().with_disk_manager_os().with_fair_spill_pool(10000000)
    config = (
        SessionConfig()
        .with_create_default_catalog_and_schema(True)
        .with_default_catalog_and_schema("foo", "bar")
        .with_target_partitions(8)
        .with_information_schema(True)
        .with_repartition_joins(False)
        .with_repartition_aggregations(False)
        .with_repartition_windows(False)
        .with_parquet_pruning(False)
        .set("datafusion.execution.parquet.pushdown_filters", "true")
    )
    ctx = SessionContext(config, runtime)
    print(ctx)


You can read more about available :code:`SessionConfig` options `here <https://arrow.apache.org/datafusion/user-guide/configs.html>`_,
and about :code:`RuntimeConfig` options `here <https://docs.rs/datafusion/latest/datafusion/execution/runtime_env/struct.RuntimeConfig.html>`_.