.. _`Dask stack example`:

.. _`org.sysess.sympathy.examples.daskstack`:

Dask stack example
``````````````````

.. image:: example.svg
   :width: 48


Node example demonstrating stacking tables using dask.




Documentation
:::::::::::::

This example shows a basic version of *VJoin Table*, implemented using
dask.
It requires the same columns to be present, and of the same type, in all
inputs.

Dask nodes have biggest effect in locked subflows and lambdas where
data between nodes is passed in memory.


Definition
::::::::::


Input ports
...........

    **input** 2 - inf,  table
        Input Table


Output ports
............

    **output**  table
        Output Table








Related nodes
.............

* :ref:`org.sysess.sympathy.examples.dasktail`

* :ref:`org.sysess.sympathy.examples.daskmax`

* :ref:`org.sysess.sympathy.examples.daskvisualize`

* :ref:`org.sysess.sympathy.data.table.vjointablenode`






Implementation
..............

.. automodule:: node_dask_examples
    :noindex:

.. class:: DaskStack
    :noindex: