jdk21 java/util/concurrent/StructuredTaskScope/StructuredThreadDumpTest cannot find symbol HotSpotDiagnosticMXBean

[pshipton]

https://openj9-jenkins.osuosl.org/job/Grinder_testList_2/46/ - amac jdk21
java/util/concurrent/StructuredTaskScope/StructuredThreadDumpTest.java

15:11:14  /Users/jenkins/workspace/Grinder_testList_2/aqa-tests/openjdk/openjdk-jdk/test/jdk/java/util/concurrent/StructuredTaskScope/StructuredThreadDumpTest.java:43: error: cannot find symbol
15:11:14  import com.sun.management.HotSpotDiagnosticMXBean.ThreadDumpFormat;
15:11:14                                                   ^
15:11:14    symbol:   class ThreadDumpFormat
15:11:14    location: interface HotSpotDiagnosticMXBean
15:11:14  /Users/jenkins/workspace/Grinder_testList_2/aqa-tests/openjdk/openjdk-jdk/test/jdk/java/util/concurrent/StructuredTaskScope/StructuredThreadDumpTest.java:149: error: cannot find symbol
15:11:14                  .dumpThreads(file.toString(), ThreadDumpFormat.JSON);
15:11:14                                                ^
15:11:14    symbol:   variable ThreadDumpFormat
15:11:14    location: class StructuredThreadDumpTest

[pshipton]

@babsingh pls take a look. Should OpenJ9 provide an equivalent JSON formatted Thread dump implementation, or start including a subset of HotSpotDiagnosticMXBean?

I didn't see it at first, but this is a dup of #15278 which excluded the test. The test was renamed since it's no longer an incubator.

@tajila fyi

[babsingh]

@babsingh pls take a look. Should OpenJ9 provide an equivalent JSON formatted Thread dump implementation, or start including a subset of HotSpotDiagnosticMXBean?

After a quick look, I believe that we might be able to to consume HotSpotDiagnosticMXBean as-is. Let me do some experimentation to see if this is feasible.

[babsingh]

Fix:

• Support HotSpotDiagnosticMXBean in OpenJ9 JDK21+ #17709
• [JDK21] Enable StructuredThreadDumpTest for OpenJ9 adoptium/aqa-tests#4659

[pshipton]

@babsingh a reminder to remove the test excluded label when a test is re-enabled.