TESTFAIL:java/lang/management/MemoryMXBean/LowMemoryTest

The test java/lang/management/MemoryMXBean/LowMemoryTest.java fails in nightly.

#section:main
----------messages:(3/181)----------
command: main -XX:+UseConcMarkSweepGC LowMemoryTest
reason: User specified action: run main/othervm/timeout=600 -XX:+UseConcMarkSweepGC LowMemoryTest
elapsed time (seconds): 2.996
----------System.out:(33/2019)----------
Setting threshold for CMS Old Gen from 0 to 35795762. Current used = 0
AllocatorThread is doing task 1 phase 1
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 1]
    usage = init = 61603840(60160K) used = 61603840(60160K) committed = 61603840(60160K) max = 357957632(349568K)
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 2]
    usage = init = 61603840(60160K) used = 36275968(35425K) committed = 61603840(60160K) max = 357957632(349568K)
AllocatorThread done task 1 phase 2
SweepThread is doing task 1 phase 2
SweepThread done task 1 phase 3
AllocatorThread is doing task 2 phase 3
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 3]
    usage = init = 61603840(60160K) used = 36415144(35561K) committed = 61603840(60160K) max = 357957632(349568K)
AllocatorThread done task 2 phase 4
SweepThread is doing task 2 phase 4
SweepThread done task 2 phase 5
AllocatorThread is doing task 3 phase 5
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 4]
    usage = init = 61603840(60160K) used = 36360064(35507K) committed = 61603840(60160K) max = 357957632(349568K)
AllocatorThread done task 3 phase 6
SweepThread is doing task 3 phase 6
SweepThread done task 3 phase 7
AllocatorThread is doing task 4 phase 7
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 5]
    usage = init = 61603840(60160K) used = 36360064(35507K) committed = 61603840(60160K) max = 357957632(349568K)
SweepThread is doing task 4 phase 8
AllocatorThread done task 4 phase 8
SweepThread done task 4 phase 9
AllocatorThread is doing task 5 phase 9
Notification for CMS Old Gen [type = java.management.memory.threshold.exceeded count = 6]
    usage = init = 61603840(60160K) used = 36360064(35507K) committed = 61603840(60160K) max = 357957632(349568K)
AllocatorThread done task 5 phase 10
SweepThread is doing task 5 phase 10
SweepThread done task 5 phase 11
----------System.err:(14/887)----------
java.lang.RuntimeException: Unexpected number of triggers = 6 but expected to be 5
at LowMemoryTest$TestListener.checkResult(LowMemoryTest.java:89)
at LowMemoryTest.main(LowMemoryTest.java:174)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:484)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
at java.lang.Thread.run(Thread.java:744)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Unexpected number of triggers = 6 but expected to be 5
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Unexpected number of triggers = 6 but expected to be 5
----------rerun:(21/1693)*----------
DISPLAY=sc11152338.us.oracle.com:1 \\
HOME=/Users/aurora/ \\
LANG=en_US.UTF-8 \\
PATH=/bin:/usr/bin \\
TZ=PST8PDT \\
CLASSPATH=/Users/aurora/CommonData/jtreg/lib/javatest.jar:/Users/aurora/CommonData/jtreg/lib/jtreg.jar:/Users/aurora/sandbox/gresults/testoutput/jdk_management/JTwork/classes/java/lang/management/MemoryMXBean:/Users/aurora/sandbox/testbase/test/java/lang/management/MemoryMXBean:/Users/aurora/CommonData/jdk/lib/tools.jar \\
    /Users/aurora/CommonData/jdk/bin/java \\
        -Dtest.vm.opts='-ea -esa -Xmx512m' \\
        -Dcompile.jdk=/Users/aurora/CommonData/jdk \\
        -Dtest.src.path=/Users/aurora/sandbox/testbase/test/java/lang/management/MemoryMXBean \\
        -Dtest.src=/Users/aurora/sandbox/testbase/test/java/lang/management/MemoryMXBean \\
        -Dtest.tool.vm.opts='-J-ea -J-esa -J-Xmx512m' \\
        -Dtest.class.path=/Users/aurora/sandbox/gresults/testoutput/jdk_management/JTwork/classes/java/lang/management/MemoryMXBean \\
        -Dtest.timeout.factor=4.0 \\
        -Dtest.classes=/Users/aurora/sandbox/gresults/testoutput/jdk_management/JTwork/classes/java/lang/management/MemoryMXBean \\
        -Dtest.class.path.prefix=/Users/aurora/sandbox/gresults/testoutput/jdk_management/JTwork/classes/java/lang/management/MemoryMXBean:/Users/aurora/sandbox/testbase/test/java/lang/management/MemoryMXBean \\
        -Dtest.jdk=/Users/aurora/CommonData/jdk \\
        -Dtest.java.opts=-d64 \\
        -Dtest.compiler.opts= \\
        -ea -esa -Xmx512m -d64 -XX:+UseConcMarkSweepGC \\
        com.sun.javatest.regtest.MainWrapper /Users/aurora/sandbox/gresults/testoutput/jdk_management/JTwork/classes/java/lang/management/MemoryMXBean/LowMemoryTest.jta
result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Unexpected number of triggers = 6 but expected to be 5


test result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Unexpected number of triggers = 6 but expected to be 5



RULE java/lang/management/MemoryMXBean/LowMemoryTest.java Exception stderr: [Exception in thread "main" java.lang.RuntimeException: Unexpected number of triggers = ... but expected to be ...