David Jacot created KAFKA-13583:
-----------------------------------
Summary: Fix FetchRequestBetweenDifferentIbpTest flaky tests
Key: KAFKA-13583
URL: https://issues.apache.org/jira/browse/KAFKA-13583
Project: Kafka
Issue Type: Improvement
Reporter: David Jacot
`FetchRequestBetweenDifferentIbpTest`'s tests often fails with:
```
org.opentest4j.AssertionFailedError: expected: <2> but was: <1>
at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:55)
at org.junit.jupiter.api.AssertionUtils.failNotEqual(AssertionUtils.java:62)
at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:150)
at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:145)
at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:510)
at
integration.kafka.server.FetchRequestBetweenDifferentIbpTest.testControllerSwitchingIBP(FetchRequestBetweenDifferentIbpTest.scala:113)
at
integration.kafka.server.FetchRequestBetweenDifferentIbpTest.testControllerOldToNewIBP(FetchRequestBetweenDifferentIbpTest.scala:87)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
```
This might be due to
[https://github.com/apache/kafka/commit/e8818e234a879d5ca45accba0121f43f45381f4a]
where we reduced the poll timeout.
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