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testOpenJ9DiagnosticsMXBean_win_0 hangs #11055

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pshipton opened this issue Oct 30, 2020 · 5 comments · Fixed by #11058
Closed

testOpenJ9DiagnosticsMXBean_win_0 hangs #11055

pshipton opened this issue Oct 30, 2020 · 5 comments · Fixed by #11058
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comp:test

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@pshipton
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The testOpenJ9DiagnosticsMXBean test is hanging on Windows. This test was never run on Windows before as it was configured to use only XL modes, and Windows doesn't run any XL testing. The change was made by #11016

https://ci.eclipse.org/openj9/job/Test_openjdk15_j9_extended.functional_x86-64_windows_Nightly_testList_0/92/
https://ci.eclipse.org/openj9/job/Test_openjdk11_j9_extended.functional_x86-64_windows_Nightly_testList_1/151/
https://ci.eclipse.org/openj9/job/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/152/

03:03:15  Running test testOpenJ9DiagnosticsMXBean_win_0 ...
03:03:15  ===============================================
03:03:15  testOpenJ9DiagnosticsMXBean_win_0 Start Time: Fri Oct 30 02:03:20 2020 Epoch Time (ms): 1604041400682
03:03:15  "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/j2sdk-image\\bin\\java" -Xshareclasses:destroyAll; "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/j2sdk-image\\bin\\java" -Xshareclasses:groupAccess,destroyAll; echo "cache cleanup done";
03:03:21  JVMSHRC005I No shared class caches available
03:03:21  JVMSHRC005I No shared class caches available
03:03:21  cache cleanup done
03:03:21  variation: NoOptions
03:03:21  JVM_OPTIONS:  
03:03:21  { itercnt=1; \
03:03:21  mkdir -p "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\test_output_1604037847818\\testOpenJ9DiagnosticsMXBean_win_0"; \
03:03:21  cd "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\test_output_1604037847818\\testOpenJ9DiagnosticsMXBean_win_0"; \
03:03:21  export PATH="/cygdrive/f/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/openjdk-test-image/openj9:/cygdrive/f/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/j2sdk-image/jre/bin/compressedrefs:/cygdrive/f/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/j2sdk-image/jre/bin/j9vm:/usr/bin:/usr/bin:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/apache-ant/apache-ant-1.10.3/bin:/cygdrive/c/Program Files/Java/jdk8u202-b08/bin:/cygdrive/c/Strawberry/perl/bin:/cygdrive/c/Program Files/Microsoft Windows Performance Toolkit:/cygdrive/c/Program Files/Microsoft SQL Server/110/Tools/Binn:/cygdrive/c/OpenSSL-1.1.1-x86_32/bin:/cygdrive/c/OpenSSL-1.1.1-x86_64/bin:/cygdrive/c/Program Files (x86)/IncrediBuild:/cygdrive/c/Program Files/Microsoft SQL Server/120/Tools/Binn:/cygdrive/c/Program Files (x86)/Microsoft SDKs/TypeScript/1.0"; \
03:03:21  "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdkbinary/j2sdk-image\\bin\\java"   \
03:03:21  -Xdump:dynamic \
03:03:21  -Dremote.server.option="  -Dcom.sun.management.jmxremote.port=9999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false" \
03:03:21  -cp "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests///..//jvmtest\\TestConfig\\resources;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\lib\\testng.jar;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\lib\\jcommander.jar;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests///..//jvmtest\\functional\\JLM_Tests\\jlm_tests.jar" \
03:03:21  org.testng.TestNG -d "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\test_output_1604037847818\\testOpenJ9DiagnosticsMXBean_win_0" "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests///..//jvmtest\\functional\\JLM_Tests\\testng.xml" \
03:03:21  -testnames testOpenJ9DiagnosticsMXBean \
03:03:21  -groups level.extended \
03:03:21  -excludegroups d.*.win_x86-64_cmprssptrs,d.*.arch.x86,d.*.os.win,d.*.bits.64,d.*.generic-all; \
03:03:21  if [ $? -eq 0 ] ; then echo ""; echo "testOpenJ9DiagnosticsMXBean_win_0""_PASSED"; echo ""; cd F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/;  else echo ""; echo "testOpenJ9DiagnosticsMXBean_win_0""_FAILED"; echo ""; fi; } 2>&1 | tee -a "F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TKG\\test_output_1604037847818\\TestTargetResult";
03:03:21  [IncludeExcludeTestAnnotationTransformer] [INFO] exclude file is F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\\TestConfig\\resources\\excludes\\latest_exclude_8.txt
03:03:21  ...
03:03:21  ... TestNG 6.14.2 by Cédric Beust (cedric@beust.com)
03:03:21  ...
03:03:21  
03:03:21  [TestOpenJ9DiagnosticsMXBean] [INFO] Starting Remote Server to Monitor!
03:03:21  [TestOpenJ9DiagnosticsMXBean] [INFO] [F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdkbinary\j2sdk-image\jre\bin\java, -Xdump:dynamic, -classpath, F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests///..//jvmtest\TestConfig\resources;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\TKG\lib\testng.jar;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests/\TKG\lib\jcommander.jar;F:/Users/jenkins/workspace/Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1/openjdk-tests///..//jvmtest\functional\JLM_Tests\jlm_tests.jar, -Dcom.sun.management.jmxremote.port=9999, -Dcom.sun.management.jmxremote.authenticate=false, -Dcom.sun.management.jmxremote.ssl=false, -Djava.lock.file=C:\temp\tmp729656781669212040.lock, org.openj9.test.java.lang.management.RemoteProcess]
03:03:21  [JvmCpuMonitorMXBeanTest] [INFO] child started
03:03:21  [TestOpenJ9DiagnosticsMXBean] [INFO] Staring remote server finished
03:03:21  JVMDUMP039I Processing dump event "allocation", detail "5600 bytes, type char[]" at 2020/10/30 02:03:24 - please wait.
03:03:21  JVMDUMP032I JVM requested Java dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_alloc.txt' in response to an event
03:03:21  JVMDUMP010I Java dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_alloc.txt
03:03:21  JVMDUMP013I Processed dump event "allocation", detail "5600 bytes, type char[]".
03:03:21  JVMDUMP039I Processing dump event "catch", detail "java/io/UnsupportedEncodingException" at 2020/10/30 02:03:25 - please wait.
03:03:21  JVMDUMP032I JVM requested Java dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_unsupported.txt' in response to an event
03:03:21  JVMDUMP010I Java dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_unsupported.txt
03:03:21  JVMDUMP013I Processed dump event "catch", detail "java/io/UnsupportedEncodingException".
03:03:21  JVMDUMP007I JVM Requesting Heap dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201030.020325.2488.0003.txt'
03:03:21  JVMDUMP010I Heap dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201030.020325.2488.0003.txt
03:03:21  JVMDUMP034I User requested Java dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\javacore.20201030.020325.2488.0004.txt' through com.ibm.jvm.Dump.JavaDump
03:03:21  JVMDUMP010I Java dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\javacore.20201030.020325.2488.0004.txt
03:03:21  JVMDUMP034I User requested Heap dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201030.020325.2488.0005.phd' through com.ibm.jvm.Dump.HeapDump
03:03:21  JVMDUMP010I Heap dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201030.020325.2488.0005.phd
03:03:21  JVMDUMP034I User requested Snap dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\Snap.20201030.020325.2488.0006.trc' through com.ibm.jvm.Dump.SnapDump
03:03:21  JVMDUMP010I Snap dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\Snap.20201030.020325.2488.0006.trc
03:03:21  JVMDUMP034I User requested System dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\core.20201030.020326.2488.0007.dmp' through com.ibm.jvm.Dump.SystemDump
03:03:21  JVMDUMP010I System dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\core.20201030.020326.2488.0007.dmp
03:03:27  JVMDUMP034I User requested Java dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\javacore.20201030.020327' through com.ibm.jvm.Dump.javaDumpToFile
03:03:27  JVMDUMP010I Java dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\javacore.20201030.020327
03:03:27  JVMDUMP034I User requested Heap dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\heapdump.020327' through com.ibm.jvm.Dump.heapDumpToFile
03:03:27  JVMDUMP010I Heap dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\heapdump.020327
03:03:27  JVMDUMP034I User requested Snap dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\Snap.2488.trc' through com.ibm.jvm.Dump.snapDumpToFile
03:03:27  JVMDUMP010I Snap dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\Snap.2488.trc
03:03:27  JVMDUMP034I User requested System dump using 'F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\core.2488.dmp' through com.ibm.jvm.Dump.systemDumpToFile
03:03:27  JVMDUMP010I System dump written to F:\Users\jenkins\workspace\Test_openjdk8_j9_extended.functional_x86-64_windows_Nightly_testList_1\openjdk-tests\TKG\test_output_1604037847818\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\core.2488.dmp
03:03:27  [JvmCpuMonitorMXBeanTest] [INFO] events occurred
@pshipton
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The reason for the _win variation was to exclude the test on win32 where it was previously running, as it was hanging there as well.
#2213

@pshipton
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pshipton commented Oct 30, 2020 •
edited
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The test passed running internally.

...
... TestNG 6.14.2 by Cédric Beust (cedric@beust.com)
...[TestOpenJ9DiagnosticsMXBean] [INFO] Starting Remote Server to Monitor

[TestOpenJ9DiagnosticsMXBean] [INFO] [w:\builds\bld_458500\sdk\wa6480\jre\bin\java, -Xdump:dynamic, -classpath, w:\builds\bld_458500/jvmtest/test/SE80\TestConfig\resources;w:\builds\bld_458500/jvmtest/test/SE80\TKG\lib\testng.jar;w:\builds\bld_458500/jvmtest/test/SE80\TKG\lib\jcommander.jar;w:\builds\bld_458500/jvmtest/test/SE80\functional\JLM_Tests\jlm_tests.jar, -Dcom.sun.management.jmxremote.port=9999, -Dcom.sun.management.jmxremote.authenticate=false, -Dcom.sun.management.jmxremote.ssl=false, -Djava.lock.file=c:\temp\tmp9115506590376162211.lock, org.openj9.test.java.lang.management.RemoteProcess]

[JvmCpuMonitorMXBeanTest] [INFO] child started
[TestOpenJ9DiagnosticsMXBean] [INFO] Staring remote server finished
JVMDUMP039I Processing dump event "allocation", detail "3384 bytes, type char[]" at 2020/10/29 23:00:52 - please wait.
JVMDUMP032I JVM requested Java dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_alloc.txt' in response to an event
JVMDUMP010I Java dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_alloc.txt
JVMDUMP013I Processed dump event "allocation", detail "3384 bytes, type char[]".
JVMDUMP039I Processing dump event "catch", detail "java/io/UnsupportedEncodingException" at 2020/10/29 23:00:54 - please wait.
JVMDUMP032I JVM requested Java dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_unsupported.txt' in response to an event
JVMDUMP010I Java dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local\javacore_unsupported.txt
JVMDUMP013I Processed dump event "catch", detail "java/io/UnsupportedEncodingException".
JVMDUMP007I JVM Requesting Heap dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201029.230056.1360.0003.txt'
JVMDUMP010I Heap dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201029.230056.1360.0003.txt
JVMDUMP034I User requested Java dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\javacore.20201029.230101.1360.0004.txt' through com.ibm.jvm.Dump.JavaDump
JVMDUMP010I Java dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\javacore.20201029.230101.1360.0004.txt
JVMDUMP034I User requested Heap dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201029.230103.1360.0005.phd' through com.ibm.jvm.Dump.HeapDump
JVMDUMP010I Heap dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\heapdump.20201029.230103.1360.0005.phd
JVMDUMP034I User requested Snap dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\Snap.20201029.230103.1360.0006.trc' through com.ibm.jvm.Dump.SnapDump
JVMDUMP010I Snap dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\Snap.20201029.230103.1360.0006.trc
JVMDUMP034I User requested System dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\core.20201029.230103.1360.0007.dmp' through com.ibm.jvm.Dump.SystemDump
JVMDUMP010I System dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\core.20201029.230103.1360.0007.dmp
JVMDUMP034I User requested Java dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\javacore.20201029.230109' through com.ibm.jvm.Dump.javaDumpToFile
JVMDUMP010I Java dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\javacore.20201029.230109
JVMDUMP034I User requested Heap dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\heapdump.230111' through com.ibm.jvm.Dump.heapDumpToFile
JVMDUMP010I Heap dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\heapdump.230111
JVMDUMP034I User requested Snap dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\Snap.1360.trc' through com.ibm.jvm.Dump.snapDumpToFile
JVMDUMP010I Snap dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\Snap.1360.trc
JVMDUMP034I User requested System dump using 'c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\core.1360.dmp' through com.ibm.jvm.Dump.systemDumpToFile
JVMDUMP010I System dump written to c:\temp\bld_458500\testOpenJ9DiagnosticsMXBean_win_0\.\local_dumps\core.1360.dmp
[JvmCpuMonitorMXBeanTest] [INFO] events occurred

PASSED: testLocal_resetDumpOptions
PASSED: testLocal_setDumpOptions
PASSED: testLocal_triggerClassicHeapDump
PASSED: testLocal_triggerDump
PASSED: testLocal_triggerDumpToFile
PASSED: testRemote_resetDumpOptions
PASSED: testRemote_setDumpOptions
PASSED: testRemote_triggerClassicHeapDump
PASSED: testRemote_triggerDump
PASSED: testRemote_triggerDumpToFile

@pshipton
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@jdekonin could firewall settings on the Windows jenkins machines be blocking the test? I notice it's setting -Dcom.sun.management.jmxremote.port=9999

@pshipton
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The test uses localhost:9999 so if there is something wrong with localhost that would also explain the problem.

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Test is also hanging internally on jenkins in the compressedrefs build, although it passes internally in the XL build. This implies it's not a machine problem.

@pshipton pshipton mentioned this issue Oct 30, 2020
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pshipton added a commit to pshipton/openj9 that referenced this issue Oct 30, 2020
@pshipton
Use redirectIO() in TestOpenJ9DiagnosticsMXBean
cbe0f2e 
The child process was hanging on Windows due to not reading the child
process IO. Unexclude the test on Windows 32-bit.

Issue eclipse-openj9#11055

[ci skip]

Signed-off-by: Peter Shipton <Peter_Shipton@ca.ibm.com>
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Use redirectIO() in TestOpenJ9DiagnosticsMXBean pshipton/openj9
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