jdk_nio_0 FAILED in Test_openjdk18_hs_extended.openjdk_ppc64_aix_testList_2

Set of tests fail for Openjdk18 aix-ppc64
java/nio/channels/FileChannel:

java/nio/channels/FileChannel/LargeGatheringWrite.java.LargeGatheringWrite
java/nio/channels/FileChannel/Transfer2GPlus.java.Transfer2GPlus
java/nio/channels/DatagramChannel/AfterDisconnect.java.AfterDisconnect
java/nio/channels/DatagramChannel/SendReceiveMaxSize.java.SendReceiveMaxSize
java/nio/Buffer/DirectBufferAllocTest.java.DirectBufferAllocTest

Jenkins URL: https://ci.adoptopenjdk.net/job/Test_openjdk18_hs_extended.openjdk_ppc64_aix_testList_2/6/#showFailuresLink
TRSS Link: https://trss.adoptium.net/allTestsInfo?buildId=616d7be7c6182d02177fff72&limit=5&hasChildren=true

**Test Info**
Test Name: jdk_nio_0
Test Duration: 45 min 42 sec
Machine: test-ibm-aix71-ppc64-2
TRSS link for the test output: https://trss.adoptium.net/output/test?id=616d8fbec6182d021780bfc5

**Build Info**
Build Name: Test_openjdk18_hs_extended.openjdk_ppc64_aix_testList_2
Jenkins Build start time: Oct 17 2021, 12:38 pm
Jenkins Build URL: https://ci.adoptopenjdk.net/job/Test_openjdk18_hs_extended.openjdk_ppc64_aix_testList_2/6/
TRSS link for the build: https://trss.adoptium.net/allTestsInfo?buildId=616d7e9fc6182d021780121c

**Java Version**
openjdk version "18" 2022-03-15
OpenJDK Runtime Environment Temurin-18+19 (build 18+19)
OpenJDK 64-Bit Server VM Temurin-18+19 (build 18+19, mixed mode)

**This test has been failed 2 times since Oct 10 2021, 02:47 pm**
**Java Version when the issue first seen**
openjdk version "18" 2022-03-15
OpenJDK Runtime Environment Temurin-18+18 (build 18+18)
OpenJDK 64-Bit Server VM Temurin-18+18 (build 18+18, mixed mode)
Jenkins Build URL: https://ci.adoptopenjdk.net/job/Test_openjdk18_hs_extended.openjdk_ppc64_aix_testList_2/5/

The test failed on machine test-ibm-aix71-ppc64-2 2 times

[Rerun in Grinder](https://ci.adoptopenjdk.net/job/Grinder/parambuild/?SDK_RESOURCE=upstream&TARGET=jdk_nio_0&TEST_FLAG=&UPSTREAM_TEST_JOB_NAME=Test_openjdk18_hs_extended.openjdk_ppc64_aix&DOCKER_REQUIRED=false&ACTIVE_NODE_TIMEOUT=0&VENDOR_TEST_DIRS=&EXTRA_DOCKER_ARGS=&TKG_OWNER_BRANCH=AdoptOpenJDK%3Amaster&TEST_PARALLELIZATION_PARAMS=&OPENJ9_SYSTEMTEST_OWNER_BRANCH=eclipse%3Amaster&PLATFORM=ppc64_aix&GENERATE_JOBS=false&KEEP_REPORTDIR=true&PERSONAL_BUILD=false&ADOPTOPENJDK_REPO=https%3A%2F%2Fgithub.com%2Fadoptium%2Faqa-tests.git&LABEL=&TEST_OPTIONS_PARAMS=&EXTRA_OPTIONS=&CUSTOMIZED_SDK_URL=&BUILD_IDENTIFIER=&NON_AQA_TEST_REPOS_HELP_TEXT=&ADOPTOPENJDK_BRANCH=master&LIGHT_WEIGHT_CHECKOUT=true&NON_AQA_TEST_REPOS=&ARTIFACTORY_SERVER=&TEST_REPO_PARAMS=&TEST_SELECTION_PARAMS=&TEST_PARALLELIZATION_PARAMS_HELP_TEXT=&JDK_SELECTION_PARAMS=&KEEP_WORKSPACE=false&USER_CREDENTIALS_ID=&JDK_VERSION=18&ITERATIONS=1&VENDOR_TEST_REPOS=&JDK_REPO=https%3A%2F%2Fgithub.com%2Fadoptium%2Fjdk&PLATFORM_AND_MACHINE_HELP_TEXT=&RELEASE_TAG=&OPENJ9_BRANCH=master&OPENJ9_SHA=&JCK_GIT_REPO=&VENDOR_TEST_BRANCHES=&UPSTREAM_JOB_NAME=build-scripts%2Fjobs%2Fjdk%2Fjdk-aix-ppc64-hotspot&OPENJ9_REPO=https%3A%2F%2Fgithub.com%2Feclipse-openj9%2Fopenj9.git&CLOUD_PROVIDER=&PLATFORM_AND_MACHINE=&CUSTOM_TARGET=&VENDOR_TEST_SHAS=&JDK_BRANCH=dev&LABEL_ADDITION=&ARTIFACTORY_REPO=&ARTIFACTORY_ROOT_DIR=&POST_RUN_PARAMS_HELP_TEXT=&UPSTREAM_TEST_JOB_NUMBER=7&DOCKERIMAGE_TAG=&JDK_SELECTION_PARAMS_HELP_TEXT=&JDK_IMPL=hotspot&TEST_TIME=&SSH_AGENT_CREDENTIAL=&AUTO_DETECT=true&TKG_SHA=&TEST_SELECTION_PARAMS_HELP_TEXT=&ADOPTOPENJDK_SYSTEMTEST_OWNER_BRANCH=adoptium%3Amaster&CUSTOMIZED_SDK_URL_CREDENTIAL_ID=&NUM_MACHINES=&OPENJDK_SHA=&TRSS_URL=&BUILD_LIST=openjdk&UPSTREAM_JOB_NUMBER=563&STF_OWNER_BRANCH=adoptium%3Amaster&TEST_REPO_PARAMS_HELP_TEXT=&POST_RUN_PARAMS=&TIME_LIMIT=10&TEST_OPTIONS_PARAMS_HELP_TEXT=&JVM_OPTIONS=&PARALLEL=None)

Start by rerunning the jdk_nio_0 test through the linked Grinder job on the ppc64 AIX machine. Inspect the Jenkins and TRSS output for LargeGatheringWrite, Transfer2GPlus, AfterDisconnect, SendReceiveMaxSize, and DirectBufferAllocTest. Done means identifying the failure cause and confirming the affected tests pass in the OpenJDK 18 AIX run.

Written by the indexing model from the issue text.