Greg F created KAFKA-19828:
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Summary: Intermittent test failures when using chained emit
strategy on window close
Key: KAFKA-19828
URL: https://issues.apache.org/jira/browse/KAFKA-19828
Project: Kafka
Issue Type: Bug
Components: streams
Reporter: Greg F
Hi, I got this example by using the following prompt in Google:
# kafka streams unit testing with chained "emitStrategy"
# Provide an example of testing chained suppress with different grace periods
[https://gist.github.com/gregfichtenholtz-illumio/81fb537e24f7187e9de37686bb8eca7d]
Compiled and ran the example using latest kafka jars only to get
[ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.103 s
<<< FAILURE! -- in com.k8sflowprocessor.ChainedEmitStrategyTopologyTest
[ERROR]
com.foo.bar.ChainedEmitStrategyTopologyTest.testChainedWindowedAggregationsWithDifferentGracePeriods
-- Time elapsed: 1.096 s <<< FAILURE!
org.opentest4j.AssertionFailedError: Final output should contain one result ==>
expected: <1> but was: <0>
at
org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:158)
at
org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:139)
at org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:201)
at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:168)
at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:694)
at
com.foo.bar.ChainedEmitStrategyTopologyTest.testChainedWindowedAggregationsWithDifferentGracePeriods(ChainedEmitStrategyTopologyTest.java:123)
It appears that the test is not able to drive the kafka stream to emit the 2nd
event.
Could be a bug in test code/test driver/kafka streams?
Thanks in advance
Greg
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