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Prevent stream buffer overflow by lowering the rate of incoming partitions #53

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patkivikram opened this issue Dec 4, 2020 · 0 comments · Fixed by #55
Closed

Prevent stream buffer overflow by lowering the rate of incoming partitions #53

patkivikram opened this issue Dec 4, 2020 · 0 comments · Fixed by #55

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@patkivikram
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Checklist

  • [ x] I have included information about relevant versions
  • [x ] I have verified that the issue persists when using the master branch of Faust.

Steps to reproduce

Have an agent process slowly. When the number of events on its Queue > stream_buffer_maxsize it causes starvation of other stream processors(agents) processing other topics

Expected behavior

Stop fetching data from the slow topic/partition when the buffer reaches a threshold and then resume it after the pressure drops

Full traceback

Paste the full traceback (if there is any)

Versions

  • Python version 3.8
  • Faust version 0.3.0
  • Operating system centos 7.5
  • Kafka version 2.4
  • RocksDB version (if applicable) 6.10.3
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Add backpressure to slow stream processing to avoid filing up the buffer faust-streaming/faust
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@patkivikram