[KAFKA-13583] Fix FetchRequestBetweenDifferentIbpTest flaky tests

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.2.0, 3.1.1
• Assignee: Kvicii.Yu
• Reporter: David Jacot
• Reviewer: David Jacot
• Created: 10/Jan/22 13:32
• Updated: 03/Feb/22 10:00
• Resolved: 03/Feb/22 10:00

Description

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.