The following test failed in the JDK15 CI:

jdk/jfr/event/compiler/TestCompilerCompile.java

Here's a snippet from the log file:

Event:jdk.Compilation {
  startTime = 20:12:47.587
  duration = 7.77 ms
  compileId = 1291
  compiler = "c2"
  method = java.lang.Long.hashCode(long)
  compileLevel = 4
  succeded = true
  isOsr = false
  codeSize = 128 bytes
  inlinedBytes = 0 bytes
}


Failed event:
jdk.Compilation {
  startTime = 20:12:47.587
  duration = 7.77 ms
  compileId = 1291
  compiler = "c2"
  method = java.lang.Long.hashCode(long)
  compileLevel = 4
  succeded = true
  isOsr = false
  codeSize = 128 bytes
  inlinedBytes = 0 bytes
}


----------System.err:(17/1131)----------
java.lang.RuntimeException: No thread in event
at jdk.test.lib.Asserts.fail(Asserts.java:594)
at jdk.test.lib.jfr.Events.assertEventThread(Events.java:169)
at jdk.jfr.event.compiler.TestCompilerCompile.verifyEvent(TestCompilerCompile.java:118)
at jdk.jfr.event.compiler.TestCompilerCompile.doTest(TestCompilerCompile.java:99)
at jdk.jfr.event.compiler.TestCompilerCompile.main(TestCompilerCompile.java:63)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.RuntimeException: No thread in event
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: No thread in event
----------rerun:(43/4886)*----------

Since this is a Tier1 failure, this bug would normally start out as P2, but
the failure is very intermittent so I'm going with P3.