Matthias J. Sax created KAFKA-8267:
--------------------------------------

             Summary: Flaky Test 
SaslAuthenticatorTest#testUserCredentialsUnavailableForScramMechanism
                 Key: KAFKA-8267
                 URL: https://issues.apache.org/jira/browse/KAFKA-8267
             Project: Kafka
          Issue Type: Bug
          Components: core, security
    Affects Versions: 2.3.0
            Reporter: Matthias J. Sax
             Fix For: 2.3.0


[https://builds.apache.org/job/kafka-pr-jdk11-scala2.12/3925/testReport/junit/org.apache.kafka.common.security.authenticator/SaslAuthenticatorTest/testUserCredentialsUnavailableForScramMechanism/]
{quote}java.lang.AssertionError: Metric not updated 
successful-reauthentication-total expected:<0.0> but was:<1.0> expected:<0.0> 
but was:<1.0> at org.junit.Assert.fail(Assert.java:89) at 
org.junit.Assert.failNotEquals(Assert.java:835) at 
org.junit.Assert.assertEquals(Assert.java:555) at 
org.apache.kafka.common.network.NioEchoServer.waitForMetrics(NioEchoServer.java:190)
 at 
org.apache.kafka.common.network.NioEchoServer.verifyReauthenticationMetrics(NioEchoServer.java:157)
 at 
org.apache.kafka.common.security.authenticator.SaslAuthenticatorTest.testUserCredentialsUnavailableForScramMechanism(SaslAuthenticatorTest.java:501){quote}
STDOUT
{quote}[2019-04-19 22:15:35,524] ERROR Extensions provided in login context 
without a token 
(org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule:318) 
java.io.IOException: Extensions provided in login context without a token at 
org.apache.kafka.common.security.oauthbearer.internals.unsecured.OAuthBearerUnsecuredLoginCallbackHandler.handle(OAuthBearerUnsecuredLoginCallbackHandler.java:164)
 at 
org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule.identifyToken(OAuthBearerLoginModule.java:316)
 at 
org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule.login(OAuthBearerLoginModule.java:301)
 at 
java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726) 
at 
java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665) 
at 
java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663) 
at java.base/java.security.AccessController.doPrivileged(Native Method) at 
java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663)
 at 
java.base/javax.security.auth.login.LoginContext.login(LoginContext.java:574) 
at 
org.apache.kafka.common.security.authenticator.AbstractLogin.login(AbstractLogin.java:60)
 at 
org.apache.kafka.common.security.authenticator.LoginManager.<init>(LoginManager.java:61)
 at 
org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:104)
 at 
org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:149)
 at 
org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:146)
 at 
org.apache.kafka.common.network.ChannelBuilders.serverChannelBuilder(ChannelBuilders.java:85)
 at 
org.apache.kafka.common.network.NioEchoServer.<init>(NioEchoServer.java:121) at 
org.apache.kafka.common.network.NioEchoServer.<init>(NioEchoServer.java:97) at 
org.apache.kafka.common.network.NetworkTestUtils.createEchoServer(NetworkTestUtils.java:49)
 at 
org.apache.kafka.common.network.NetworkTestUtils.createEchoServer(NetworkTestUtils.java:43)
 at 
org.apache.kafka.common.security.authenticator.SaslAuthenticatorTest.createEchoServer(SaslAuthenticatorTest.java:1851)
 at 
org.apache.kafka.common.security.authenticator.SaslAuthenticatorTest.createEchoServer(SaslAuthenticatorTest.java:1847)
 at 
org.apache.kafka.common.security.authenticator.SaslAuthenticatorTest.testValidSaslOauthBearerMechanismWithoutServerTokens(SaslAuthenticatorTest.java:1586)
 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method) at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.base/java.lang.reflect.Method.invoke(Method.java:566) at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
 at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
 at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) 
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305) at 
org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:365) at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
 at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
 at org.junit.runners.ParentRunner$4.run(ParentRunner.java:330) at 
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:78) at 
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:328) at 
org.junit.runners.ParentRunner.access$100(ParentRunner.java:65) at 
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292) at 
org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305) at 
org.junit.runners.ParentRunner.run(ParentRunner.java:412) at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
 at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
 at 
org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
 at 
org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
 at 
org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
 at jdk.internal.reflect.GeneratedMethodAccessor36.invoke(Unknown Source) at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.base/java.lang.reflect.Method.invoke(Method.java:566) at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
 at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
 at 
org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
 at 
org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
 at com.sun.proxy.$Proxy2.processTestClass(Unknown Source) at 
org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:118)
 at jdk.internal.reflect.GeneratedMethodAccessor35.invoke(Unknown Source) at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.base/java.lang.reflect.Method.invoke(Method.java:566) at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
 at 
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
 at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:175)
 at 
org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:157)
 at 
org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
 at 
org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
 at 
org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
 at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
 at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 at 
org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
 at java.base/java.lang.Thread.run(Thread.java:834) Caused by: 
org.apache.kafka.common.security.oauthbearer.internals.unsecured.OAuthBearerConfigException:
 Extensions provided in login context without a token at 
org.apache.kafka.common.security.oauthbearer.internals.unsecured.OAuthBearerUnsecuredLoginCallbackHandler.handleTokenCallback(OAuthBearerUnsecuredLoginCallbackHandler.java:191)
 at 
org.apache.kafka.common.security.oauthbearer.internals.unsecured.OAuthBearerUnsecuredLoginCallbackHandler.handle(OAuthBearerUnsecuredLoginCallbackHandler.java:162)
 ... 71 more{quote}
 



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