John Roesler created KAFKA-10202:
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Summary: SmokeTest should provide a machanism to generate
continuously AND verify the result
Key: KAFKA-10202
URL: https://issues.apache.org/jira/browse/KAFKA-10202
Project: Kafka
Issue Type: Improvement
Components: streams, system tests
Reporter: John Roesler
Several system tests use the SmokeTestDriver, but they have to choose between
generating for a fixed period of time (say, two minutes) before verifying
results OR generating until cancelled with no verification.
It's not impossible to implement "generate until cancelled and then verify",
and doing so would both speed up tests that are just blocked by the two-minute
generation period AND decrease flakiness in other tests, when they can't
complete all their operations within the deadline before verification begins.
One ides is to revamp the smoke test driver's verification logic to make it
consume the input and determine the expected results, so that the verifier can
be run as a separate process instead of passing the expected results straight
from the generator to the verifier. This is how the RelationalSmokeTest works.
An alternative is to register a signal handler so that we can signal the driver
to stop generating and start verifying.
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