[KAFKA-9001] Flaky Test KStreamAggregationIntegrationTest#shouldReduceSessionWindows

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: streams, unit tests
• Labels: flaky-test
• Assignee: A. Sophie Blee-Goldman
• Reporter: A. Sophie Blee-Goldman
• Created: 08/Oct/19 18:10
• Updated: 15/May/20 16:46
• Resolved: 15/May/20 16:46

Description

Jenkins link: https://jenkins.confluent.io/job/apache-kafka-test/job/2.3/18/testReport/junit/org.apache.kafka.streams.integration/KStreamAggregationIntegrationTest/shouldReduceSessionWindows/

Stacktrace

java.lang.AssertionError: Expected: <KeyValue(start, 1558759753345)>
  but: was null
    at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18) 
    at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:6) 
    at org.apache.kafka.streams.integration.KStreamAggregationIntegrationTest.shouldReduceSessionWindows(KStreamAggregationIntegrationTest.java:663)

Standard Error

Processed a total of 15 messages
Processed a total of 15 messages