[
https://issues.apache.org/jira/browse/KAFKA-14967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Shaw updated KAFKA-14967:
-------------------------------
Description:
Calling {{CreateTopicsResult.topicId().get()}} throws
{{{}NullPointerException{}}}, while {{KafkaAdminClient}} correctly returns the
topicId.
Stacktrace:
{code:java}
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at
java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
at
java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073)
at
org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:165)
at
MockAdminClientBug.shouldNotThrowNullPointerException(MockAdminClientBug.java:37)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at
org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
at
org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at
org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
at
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
at
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
at
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
at
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
at
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
at
org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at
org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
at
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
at
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at
org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at
org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
at
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
at
org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
at
org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:110)
at
org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:90)
at
org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:85)
at
org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at
org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at
org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at
org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
at
org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
at
org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
at
org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
at
org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
at
org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
at
org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
at
org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
at
worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
at
worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
Caused by: java.lang.NullPointerException
at
org.apache.kafka.common.internals.KafkaFutureImpl.lambda$thenApply$0(KafkaFutureImpl.java:60)
at
java.base/java.util.concurrent.CompletableFuture.uniApplyNow(CompletableFuture.java:684)
at
java.base/java.util.concurrent.CompletableFuture.uniApplyStage(CompletableFuture.java:662)
at
java.base/java.util.concurrent.CompletableFuture.thenApply(CompletableFuture.java:2168)
at
org.apache.kafka.common.internals.KafkaFutureImpl.thenApply(KafkaFutureImpl.java:58)
at
org.apache.kafka.clients.admin.CreateTopicsResult.topicId(CreateTopicsResult.java:82)
... 85 more
{code}
Test case to reproduce:
{code:java}
import org.apache.kafka.clients.admin.Admin;
import org.apache.kafka.clients.admin.CreateTopicsResult;
import org.apache.kafka.clients.admin.MockAdminClient;
import org.apache.kafka.clients.admin.NewTopic;
import org.apache.kafka.common.Node;
import org.apache.kafka.common.Uuid;
import org.junit.jupiter.api.Test;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import static java.util.Collections.singletonList;
public class MockAdminClientBug {
@Test
void shouldNotThrowNullPointerException() throws ExecutionException,
InterruptedException {
Node controller = new Node(0, "mock", 0);
try (Admin admin = new MockAdminClient(singletonList(controller),
controller)) {
CreateTopicsResult result = admin.createTopics(singletonList(new
NewTopic("TestTopic", Optional.empty(), Optional.empty())));
Uuid topicId = result.topicId("TestTopic").get();
System.out.println(topicId);
}
}
}
{code}
was:
Calling {{CreateTopicsResult.topicId().get()}} throws {{NullPointerException}},
while {{KafkaAdminClient}} correctly returns the topicId.
Test case to reproduce:
{code:java}
import org.apache.kafka.clients.admin.Admin;
import org.apache.kafka.clients.admin.CreateTopicsResult;
import org.apache.kafka.clients.admin.MockAdminClient;
import org.apache.kafka.clients.admin.NewTopic;
import org.apache.kafka.common.Node;
import org.apache.kafka.common.Uuid;
import org.junit.jupiter.api.Test;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import static java.util.Collections.singletonList;
public class MockAdminClientBug {
@Test
void shouldNotThrowNullPointerException() throws ExecutionException,
InterruptedException {
Node controller = new Node(0, "mock", 0);
try (Admin admin = new MockAdminClient(singletonList(controller),
controller)) {
CreateTopicsResult result = admin.createTopics(singletonList(new
NewTopic("TestTopic", Optional.empty(), Optional.empty())));
Uuid topicId = result.topicId("TestTopic").get();
System.out.println(topicId);
}
}
}
{code}
> MockAdminClient throws NullPointerException in CreateTopicsResult
> -----------------------------------------------------------------
>
> Key: KAFKA-14967
> URL: https://issues.apache.org/jira/browse/KAFKA-14967
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 3.4.0
> Reporter: James Shaw
> Priority: Major
>
> Calling {{CreateTopicsResult.topicId().get()}} throws
> {{{}NullPointerException{}}}, while {{KafkaAdminClient}} correctly returns
> the topicId.
> Stacktrace:
> {code:java}
> java.util.concurrent.ExecutionException: java.lang.NullPointerException
> at
> java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
> at
> java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:165)
> at
> MockAdminClientBug.shouldNotThrowNullPointerException(MockAdminClientBug.java:37)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:568)
> at
> org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
> at
> org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
> at
> org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
> at
> org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
> at
> org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
> at
> org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
> at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
> at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
> at
> org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
> at
> org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
> at
> org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
> at
> org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
> at
> org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
> at
> org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
> at
> org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
> at
> org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
> at
> org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
> at
> org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
> at
> org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:110)
> at
> org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:90)
> at
> org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:85)
> at
> org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:62)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:568)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
> at
> org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
> at
> org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
> at jdk.proxy1/jdk.proxy1.$Proxy2.stop(Unknown Source)
> at
> org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
> at
> org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
> at
> org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
> at
> org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
> at
> org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
> at
> org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:113)
> at
> org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:65)
> at
> worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
> at
> worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
> Caused by: java.lang.NullPointerException
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.lambda$thenApply$0(KafkaFutureImpl.java:60)
> at
> java.base/java.util.concurrent.CompletableFuture.uniApplyNow(CompletableFuture.java:684)
> at
> java.base/java.util.concurrent.CompletableFuture.uniApplyStage(CompletableFuture.java:662)
> at
> java.base/java.util.concurrent.CompletableFuture.thenApply(CompletableFuture.java:2168)
> at
> org.apache.kafka.common.internals.KafkaFutureImpl.thenApply(KafkaFutureImpl.java:58)
> at
> org.apache.kafka.clients.admin.CreateTopicsResult.topicId(CreateTopicsResult.java:82)
> ... 85 more
> {code}
>
> Test case to reproduce:
> {code:java}
>
> import org.apache.kafka.clients.admin.Admin;
> import org.apache.kafka.clients.admin.CreateTopicsResult;
> import org.apache.kafka.clients.admin.MockAdminClient;
> import org.apache.kafka.clients.admin.NewTopic;
> import org.apache.kafka.common.Node;
> import org.apache.kafka.common.Uuid;
> import org.junit.jupiter.api.Test;
> import java.util.Optional;
> import java.util.concurrent.ExecutionException;
> import static java.util.Collections.singletonList;
> public class MockAdminClientBug {
> @Test
> void shouldNotThrowNullPointerException() throws ExecutionException,
> InterruptedException {
> Node controller = new Node(0, "mock", 0);
> try (Admin admin = new MockAdminClient(singletonList(controller),
> controller)) {
> CreateTopicsResult result = admin.createTopics(singletonList(new
> NewTopic("TestTopic", Optional.empty(), Optional.empty())));
> Uuid topicId = result.topicId("TestTopic").get();
> System.out.println(topicId);
> }
> }
> }
> {code}
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