robertwb opened a new pull request, #24037:
URL: https://github.com/apache/beam/pull/24037
This runner can either render the graph to a (set of) output path(s), as
designated by (possibly repeated) --render_output, or serve the pipeline as
an interactive graph, if --render_port is set.
In Python, this runner can be passed directly at pipeline construction,
e.g.::
with beam.Pipeline(runner=beam.runners.render.RenderRunner(), options=...)
For other languages, start this service a by running::
python -m apache_beam.runners.render --job_port=PORT ...
and then run your pipline with the PortableRunner setting the job endpoint
to `localhost:PORT`.
If any `--render_output=path.ext` flags are passed, each submitted job will
get written to the given output (overwriting any previously existing file).
If `--render_port` is set to a non-negative value, a local http server will
be started which allows for interactive exploration of the pipeline graph.
Requires the that graphviz dot executable be available in the path.
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