A. Sophie Blee-Goldman created KAFKA-12506:
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Summary: Expand AdjustStreamThreadCountTest
Key: KAFKA-12506
URL: https://issues.apache.org/jira/browse/KAFKA-12506
Project: Kafka
Issue Type: Improvement
Components: streams, unit tests
Reporter: A. Sophie Blee-Goldman
Right now the AdjustStreamThreadCountTest runs a minimal topology that just
consumes a single input topic, and doesn't produce any data to this topic. Some
of the complex concurrency bugs that we've found only showed up when we had
some actual data to process and a stateful topology:
[KAFKA-12503|https://issues.apache.org/jira/browse/KAFKA-12503]
We should try to expand the Streams application in this test to really flex the
feature. Imo this would include
# One or more stateful operators in the topology, with caching enabled
# A repartition to get multiple subtopologies
# Writing to an output topic
# Produce some data to the input topic and verify that some results show up in
the output
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