Comments (7)
or sending the data + exception to another pipeline.
This is exactly how we handle exceptions in Apache NiFi and the feedback from community members seems to almost always be positive.
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Yes, at some point we should handle exceptions. Also stopping signals. I don't have a short term plan for this or any concrete thoughts.
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This reminds me a little of the Try-Monads talk from pygotham (not that I think we should necessarily use Try-Mondads).
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from streamz.
Relevent? http://reactivex.io/RxJava/2.x/javadoc/io/reactivex/exceptions/Exceptions.html
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This might be one area where treating the graph as a walkable DAG may be helpful. One could imagine writing a function which walked the graph, looked for nodes where exceptions could occur (map, filter, etc.) and then decorates update to handle the exceptions, potentially with some callback function, logging, or sending the data + exception to another pipeline.
I think this general pattern, keep the pipeline simple and then decorate things once the DAG has been made is interesting.
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We currently pass messages forward and futures backwards with the emit/update methods. My guess is that we would do something similar with exception and stop signals.
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Related Issues (20)
- missing positional argument: 'topic' in to_mqtt HOT 5
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- Passing Username and Password to from_mqtt() HOT 4
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- Dropping `pkg_resources`
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- visualizing streams and changing variables during runtime HOT 5
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- Collect does not allow awaitable sinks
- Quickstart lacks conda/environments/streamz_dev.yml HOT 6
- Hello from LorryStream and Kotori / Streamz is cool HOT 1
- Add pytest fixture to clean up the IO loop HOT 4
- Streamz hvplot resets zoom and pan on each update HOT 3
- streamz's typing system can't work properly in vscode HOT 2
- Streamz with websocket not steaming any data HOT 5
- Parallel streams with buffers HOT 3
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