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https://issues.apache.org/jira/browse/GEODE-7739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520671#comment-17520671
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Geode Integration commented on GEODE-7739:
------------------------------------------
Seen in [distributed-test-openjdk8
#1885|https://concourse.apachegeode-ci.info/teams/main/pipelines/apache-develop-mass-test-run/jobs/distributed-test-openjdk8/builds/1885]
... see [test
results|http://files.apachegeode-ci.info/builds/apache-develop-mass-test-run/1.15.0-build.1088/test-results/distributedTest/1649537999/]
or download
[artifacts|http://files.apachegeode-ci.info/builds/apache-develop-mass-test-run/1.15.0-build.1088/test-artifacts/1649537999/distributedtestfiles-openjdk8-1.15.0-build.1088.tgz].
> JMX managers may fail to federate mbeans for other members
> ----------------------------------------------------------
>
> Key: GEODE-7739
> URL: https://issues.apache.org/jira/browse/GEODE-7739
> Project: Geode
> Issue Type: Bug
> Components: jmx
> Reporter: Kirk Lund
> Assignee: Kirk Lund
> Priority: Major
> Labels: GeodeOperationAPI, pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> JMX Manager may fail to federate one or more MXBeans for other members
> because of a race condition during startup. When ManagementCacheListener is
> first constructed, it is in a state that will ignore all callbacks because
> the field readyForEvents is false.
> ----
> Debugging with JMXMBeanReconnectDUnitTest revealed this bug.
> The test starts two locators with jmx manager configured and started.
> Locator1 always has all of locator2's mbeans, but locator2 is intermittently
> missing the personal mbeans of locator1.
> I think this is caused by some sort of race condition in the code that
> creates the monitoring regions for other members in locator2.
> It's possible that the jmx manager that hits this bug might fail to have
> mbeans for servers as well as other locators but I haven't seen a test case
> for this scenario.
> The exposure of this bug means that a user running more than one locator
> might have a locator that is missing one or more mbeans for the cluster.
> ----
> Studying the JMX code also reveals the existence of *GEODE-8012*.
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