Intermittent test failure: javax/management/monitor/NullAttributeValueTest.java

TESTFAIL:javax/management/monitor/NullAttributeValueTest.java

javax/management/monitor/NullAttributeValueTest.java failing intermittently:

>>> ----------------------------------------
>>> CREATE a new StringMonitor MBean
>>> ADD a listener to the StringMonitor
>>> CREATE a new ObservedObject MBean
>>> SET the attributes of the StringMonitor:
ATTRIBUTE "ObservedObject" = DefaultDomain:type=ObservedObject
ATTRIBUTE "ObservedAttribute" = StringAttribute
ATTRIBUTE "NotifyMatch" = true
ATTRIBUTE "NotifyDiffer" = false
ATTRIBUTE "StringToCompare" = "do_match_now"
ATTRIBUTE "GranularityPeriod" = 500
>>> START the StringMonitor
KO: StringMonitor notification missed or not emitted
>>> ----------------------------------------
>>> Unhappy Bye, Bye!
----------System.err:(13/936)----------
java.lang.IllegalStateException: Test FAILED: Didn't get all the notifications that were expected by the test!
at NullAttributeValueTest.main(NullAttributeValueTest.java:346)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
at java.lang.Thread.run(Thread.java:724)