java/nio/channels/AsynchronousSocketChannel/StressLoopback.java intermittent

[M-Davies]

https://github.com/ibmruntimes/openj9-openjdk-jdk8/blob/544e7f29c18914f03aefdca4127f0e380253e0ff/jdk/test/java/nio/channels/AsynchronousSocketChannel/StressLoopback.java#L1 fails intermittently (roughly 6/10 times) on JDK8-hs-aix and JDK8-j9-aix. The failure is caused by the test timing out after thread deadlock

The test is marked as failing intermittently on JDK9+ (https://bugs.openjdk.java.net/browse/JDK-8172200) and there is work underway to fix this for JDK11 (https://bugs.openjdk.java.net/browse/JDK-8211851) but not for JDK8. If I could get a JBS member to add to 8211851 for me, passing over the above information, that would be great.

Jdk8-hs-aix(10 iterations)

13:55:09  openjdk version "1.8.0_242"
13:55:09  OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_242-202002060435-b08)
13:55:09  OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.242-b08, mixed mode)

openjdk_test_output_StressLookback.tar.gz

[M-Davies]

JDK8 problem raised on JBS (https://bugs.openjdk.java.net/browse/JDK-8211851)

[M-Davies]

Excluded in #1613