[jboss-jira] [JBoss JIRA] (WFCORE-2997) Intermittent failures in JmxAuditLogFieldsOfLogTestCase

Intermittent failures in JmxAuditLogFieldsOfLogTestCase ------------------------------------------------------- Key: WFCORE-2997 URL: https://issues.jboss.org/browse/WFCORE-2997 Project: WildFly Core Issue Type: Bug Reporter: Kabir Khan Assignee: Kabir Khan This test fails due to an extra entry now and again for calls to unregisterMBean for ObjectNames of the type "jboss.modules:type=ModuleLoader,name=ServiceModuleLoader-nnn". {code} java.lang.AssertionError: [{ "type" => "jmx", "r/o" => false, "booting" => false, "version" => "3.0.0.Beta27-SNAPSHOT", "user" => "anonymous", "domainUUID" => undefined, "access" => undefined, "remote-address" => undefined, "method" => "unregisterMBean", "sig" => ["javax.management.ObjectName"], "params" => ["jboss.modules:type=ModuleLoader,name=ServiceModuleLoader-3"]}, { "type" => "jmx", "r/o" => true, "booting" => false, "version" => "3.0.0.Beta27-SNAPSHOT", "user" => "IAmAdmin", "domainUUID" => undefined, "access" => "JMX", "remote-address" => "/0:0:0:0:0:0:0:1", "method" => "queryMBeans", "sig" => [ "javax.management.ObjectName", "javax.management.QueryExp" ], "params" => [ "java.lang:*", undefined ]}] expected:<1> but was:<2> at org.junit.Assert.fail(Assert.java:88) at org.junit.Assert.failNotEquals(Assert.java:834) at org.junit.Assert.assertEquals(Assert.java:645) at org.jboss.as.test.manualmode.auditlog.AbstractLogFieldsOfLogTestCase.readFile(AbstractLogFieldsOfLogTestCase.java:144) at org.jboss.as.test.manualmode.auditlog.JmxAuditLogFieldsOfLogTestCase.testJmxAuditLoggingFields(JmxAuditLogFieldsOfLogTestCase.java:60) {code} When the ServiceLoaders are created, these XMBeans are registered and hold a WeakReference to the ServiceLoader, The WeakReference has a reference queue which triggers a Reaper in ModuleLoader. This Reaper is then run when the weak reference is cleared, and results in the call to unregister the mbean which is then logged in the audit log. When this happens in not-deterministic and can happen at any time, so the test should strip out these .