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https://issues.apache.org/jira/browse/GEODE-5782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17220737#comment-17220737
 ] 

ASF GitHub Bot commented on GEODE-5782:
---------------------------------------

jdeppe-pivotal commented on a change in pull request #5648:
URL: https://github.com/apache/geode/pull/5648#discussion_r512001303



##########
File path: 
geode-core/src/integrationTest/java/org/apache/geode/distributed/LauncherMemberMXBeanIntegrationTest.java
##########
@@ -227,6 +227,8 @@ public void showJVMMetrics_returnsOJVMMetricsType()
         if (cdsValue.equals(osMetricValue)) {
           break;
         }
+        System.gc();
+        System.runFinalization();

Review comment:
       Yes, I'm probably on the wrong track here. The test flakiness is around 
reporting memory stats. Since the underlying (volatile) values are retrieved 
from `VMStatsMonitor` would it then be better to reduce the stat sampling 
period so that values are updated more frequently?




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> LauncherMemberMXBeanIntegrationTest can fail intermittently
> -----------------------------------------------------------
>
>                 Key: GEODE-5782
>                 URL: https://issues.apache.org/jira/browse/GEODE-5782
>             Project: Geode
>          Issue Type: Test
>          Components: jmx
>    Affects Versions: 1.9.0
>            Reporter: Jens Deppe
>            Assignee: Jens Deppe
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Noticed this failure:
> {noformat}
> org.apache.geode.distributed.LauncherMemberMXBeanIntegrationTest > 
> showOSMetrics_reconstructsOSMetricsFromCompositeDataType FAILED
>     org.junit.ComparisonFailure: expected:<204.[68]> but was:<204.[55]>
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
> Method)
>         at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
>         at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>         at 
> org.apache.geode.distributed.LauncherMemberMXBeanIntegrationTest.showOSMetrics_reconstructsOSMetricsFromCompositeDataType(LauncherMemberMXBeanIntegrationTest.java:143)
> {noformat}



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