[FLINK-31298] ConnectionUtilsTest.testFindConnectingAddressWhenGetLocalHostThrows swallows IllegalArgumentException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0, 1.15.3, 1.16.1
• Fix Version/s: 1.17.0, 1.16.2
• Component/s: Runtime / Network
• Labels: pull-request-available starter test-stability
• Assignee: Wencong Liu
• Reporter: Matthias Pohl
• Created: 02/Mar/23 10:01
• Updated: 09/Mar/23 06:01
• Resolved: 09/Mar/23 06:01

Description

FLINK-24156 introduced NetUtils.acceptWithoutTimeout which caused the test to print a the stacktrace of an IllegalArgumentException:

Exception in thread "Thread-0" java.lang.IllegalArgumentException: serverSocket SO_TIMEOUT option must be 0
	at org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:138)
	at org.apache.flink.util.NetUtils.acceptWithoutTimeout(NetUtils.java:139)
	at org.apache.flink.runtime.net.ConnectionUtilsTest$1.run(ConnectionUtilsTest.java:83)
	at java.lang.Thread.run(Thread.java:750)

This is also shown in the Maven output of CI runs and might cause confusion. The test should be fixed.

Issue Links

• is caused by: FLINK-24156 BlobServer crashes due to SocketTimeoutException in Java 11
• links to: GitHub Pull Request #22110
• links to: GitHub Pull Request #22128
• links to: GitHub Pull Request #22129