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Memory leak detected while using r2dbc-mssql 1.0.2 #279

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kucharzyk opened this issue Sep 8, 2023 · 8 comments
Open

Memory leak detected while using r2dbc-mssql 1.0.2 #279

kucharzyk opened this issue Sep 8, 2023 · 8 comments
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type: bug Something isn't working

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@kucharzyk
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I am getting the following error during the tests with r2dbc-mssql 1.0.2.RELEASE

2023-09-08 10:38:14,559 ERROR [reactor-tcp-nio-2] io.netty.util.ResourceLeakDetector: LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 
Created at:
	io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:407)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
	io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)
	io.r2dbc.mssql.codec.RpcEncoding.lambda$encodeTemporalNull$5(RpcEncoding.java:236)
	io.r2dbc.mssql.codec.Encoded.getValue(Encoded.java:56)
	io.r2dbc.mssql.codec.ByteArray.fromEncoded(ByteArray.java:46)
	io.r2dbc.mssql.codec.ZonedDateTimeCodec.<clinit>(ZonedDateTimeCodec.java:46)
	io.r2dbc.mssql.codec.DefaultCodecs.<init>(DefaultCodecs.java:51)
	io.r2dbc.mssql.MssqlConnectionConfiguration.toConnectionOptions(MssqlConnectionConfiguration.java:197)
	io.r2dbc.mssql.MssqlConnectionFactory.<init>(MssqlConnectionFactory.java:64)
	io.r2dbc.mssql.MssqlConnectionFactory.<init>(MssqlConnectionFactory.java:56)
	io.r2dbc.mssql.MssqlConnectionFactoryProvider.create(MssqlConnectionFactoryProvider.java:206)
	io.r2dbc.mssql.MssqlConnectionFactoryProvider.create(MssqlConnectionFactoryProvider.java:48)
	io.r2dbc.spi.ConnectionFactories.find(ConnectionFactories.java:110)
	io.r2dbc.spi.ConnectionFactories.get(ConnectionFactories.java:140)
	org.springframework.boot.r2dbc.ConnectionFactoryBuilder$OptionsCapableWrapper.buildAndWrap(ConnectionFactoryBuilder.java:191)
	org.springframework.boot.r2dbc.ConnectionFactoryBuilder$PoolingAwareOptionsCapableWrapper.buildAndWrap(ConnectionFactoryBuilder.java:204)
	org.springframework.boot.r2dbc.ConnectionFactoryBuilder.build(ConnectionFactoryBuilder.java:177)
	org.springframework.boot.autoconfigure.r2dbc.ConnectionFactoryConfigurations.createConnectionFactory(ConnectionFactoryConfigurations.java:72)
	org.springframework.boot.autoconfigure.r2dbc.ConnectionFactoryConfigurations$GenericConfiguration.connectionFactory(ConnectionFactoryConfigurations.java:130)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.base/java.lang.reflect.Method.invoke(Method.java:568)
	org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:139)
	org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655)
	org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:647)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1332)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1162)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1417)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1337)
	org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:888)
	org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
	org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:550)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1332)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1162)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1417)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1337)
	org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:888)
	org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
	org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:245)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1352)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1189)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:417)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1332)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1162)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:365)
	org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:135)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1682)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:597)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1417)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1337)
	org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:888)
	org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
	org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:245)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1352)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1189)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560)
	org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520)
	org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326)
	org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324)
	org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
	org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:973)
	org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:942)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608)
	org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66)
	org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
	org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:436)
	org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
	org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137)
	org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58)
	org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46)
	org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1406)
	org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:545)
	org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137)
	org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108)
	org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:187)
	org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:119)
	org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:127)
	org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:141)
	org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:97)
	org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:241)
	org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:377)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:382)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:377)
	java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310)
	java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)
	java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:376)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:289)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:288)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:278)
	java.base/java.util.Optional.orElseGet(Optional.java:364)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:277)
	org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$before$2(ClassBasedTestDescriptor.java:203)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.before(ClassBasedTestDescriptor.java:202)
	org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.before(ClassBasedTestDescriptor.java:84)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:148)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
	org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
	org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
	org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
	org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
	org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
	org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
	org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
	org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96)
	org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75)
	org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:99)
	org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$000(JUnitPlatformTestClassProcessor.java:79)
	org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:75)
	org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.base/java.lang.reflect.Method.invoke(Method.java:568)
	org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	jdk.proxy2/jdk.proxy2.$Proxy5.stop(Unknown Source)
	org.gradle.api.internal.tasks.testing.worker.TestWorker$3.run(TestWorker.java:193)
	org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)
	org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
	worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

It might be caused by some not released buffers.
@mp911de mp911de added the type: bug Something isn't working label Sep 8, 2023
@mp911de
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mp911de commented Sep 8, 2023

Good catch. We eagerly allocate a buffer in the ZonedDateTimeCodec without releasing its contents.

@patriknw patriknw mentioned this issue Feb 2, 2024
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@jaksah
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jaksah commented Feb 16, 2024 •
edited
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We encountered the same error but for io.r2dbc.mssql.codec.LocalDateCodec with same r2dbc-mssql version (1.0.2-RELEASE). I suspect it might be the same root cause as for ZonedDateTimeCodec?

@kijanowski
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And another one for ByteCodec in the 1.0.2.RELEASE:

2024-07-18T20:50:01.274+02:00 ERROR 27283 --- [actor-tcp-nio-5] io.netty.util.ResourceLeakDetector       : LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 
Created at:
	io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:404)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
	io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)
	io.r2dbc.mssql.codec.RpcEncoding.prepareBuffer(RpcEncoding.java:258)
	io.r2dbc.mssql.codec.RpcEncoding.lambda$encodeNull$2(RpcEncoding.java:181)
	io.r2dbc.mssql.codec.Encoded.getValue(Encoded.java:56)
	io.r2dbc.mssql.codec.ByteArray.fromEncoded(ByteArray.java:46)
	io.r2dbc.mssql.codec.ByteCodec.<clinit>(ByteCodec.java:41)
	io.r2dbc.mssql.codec.DefaultCodecs.<init>(DefaultCodecs.java:51)
	io.r2dbc.mssql.MssqlConnectionConfiguration.toConnectionOptions(MssqlConnectionConfiguration.java:197)
...

@GreatImNate
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Been running into this issue as well. Could the issue be due to the change to Supplier<ByteBuf> in RpcEncoding? It looks like previously whenever the Encoded was disposed, the ByteBuf would be released, but now it only is released when the Supplier<> is an instance of DisposableSupplier. Stepping through with a debugger, the Supplier<> in HintedEncoded is never of that type if it's created as a lambda expression.

Every time a connection timed out I would see a leak warning with leak detection set to paranoid. This is what initially lead me to believe it's an issue when .dispose() is called for Encoded.

@jp-lno
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jp-lno commented Sep 25, 2024

We have encountered a similar memory leak and are currently working on a local fix. It appears that the repository is no longer actively maintained. While we could submit a Pull Request to share our changes, it seems unlikely that a new release will be published.
Does the project owner still monitor comments on this project?

@mp911de
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mp911de commented Sep 25, 2024

While we could submit a Pull Request to share our changes,

This would be highly appreciated to see what you've changed to address the issue.

It appears that the repository is no longer actively maintained.

It is a proper perspective on the current state. With me as sole maintainer, things have changed in a way that a big chunk of my team was laid off in the past year and I have now even less bandwidth to maintain that project. I've attempted to dig into these memory leaks a couple times and I do not have the time to spend on a couple days for another attempt.

Microsoft doesn't seem interested in maintaining the driver as well and so that is the fate of single-maintainer projects with little free time.

That being said, I appreciate if the community would engage in maintenance as that is what this project needs the most.

@jp-lno
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jp-lno commented Sep 25, 2024

I appreciate that you're attentive to community feedback.
I've recently joined a team that is working on a project using this driver. We are currently facing memory leak issues and are attempting to resolve them by updating this library. Our latest investigation points to .dispose() as a potential cause, similar to what @GreatImNate identified. After implementing several fixes, we've noticed improved efficiency, but we continue to see the following warning:

LEAK: ByteBuf.release() was not called before it's garbage-collected

While we haven't yet found a complete fix, we will be operating with this warning for the moment due to budget constraints.
Although we don't have a solution to propose at the moment, we're actively working on it. Depending on our findings, we may consider switching to Hibernate Reactive, although that would represent a significant change and budget considerations will play a major role.

Thank you for your response! :)

@robinroscher
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robinroscher commented Oct 10, 2024 •
edited
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We had the same error as @kijanowski, in our case during service startup when the ConnectionFactory bean was being created. Until this gets fixed, for us the issue went away by downgrading to 1.0.1.RELEASE so it looks like the issue has been introduced with the changes from the latest release.
I hope this helps someone!

Edit: We had to use 1.0.0.RELEASE in the end due to #271

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@kijanowski @mp911de @jaksah @kucharzyk @GreatImNate @robinroscher @jp-lno