codelipenghui opened a new issue #5747: Release ByteBuf failed when send a over size message in message batch container URL: https://github.com/apache/pulsar/issues/5747 **Describe the bug** Here is the error log when publish a over size message: ``` io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1 at io.netty.util.internal.ReferenceCountUpdater.toLiveRealRefCnt(ReferenceCountUpdater.java:74) ~[netty-common-4.1.43.Final.jar:4.1.43.Final] at io.netty.util.internal.ReferenceCountUpdater.release(ReferenceCountUpdater.java:138) ~[netty-common-4.1.43.Final.jar:4.1.43.Final] at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:100) ~[netty-buffer-4.1.43.Final.jar:4.1.43.Final] at io.netty.util.ReferenceCountUtil.release(ReferenceCountUtil.java:88) ~[netty-common-4.1.43.Final.jar:4.1.43.Final] at io.netty.util.ReferenceCountUtil.safeRelease(ReferenceCountUtil.java:113) [netty-common-4.1.43.Final.jar:4.1.43.Final] at org.apache.pulsar.client.impl.BatchMessageKeyBasedContainer$KeyedBatch.discard(BatchMessageKeyBasedContainer.java:244) [classes/:?] at org.apache.pulsar.client.impl.BatchMessageKeyBasedContainer.createOpSendMsg(BatchMessageKeyBasedContainer.java:125) [classes/:?] at org.apache.pulsar.client.impl.BatchMessageKeyBasedContainer.createOpSendMsgs(BatchMessageKeyBasedContainer.java:145) [classes/:?] at org.apache.pulsar.client.impl.ProducerImpl.batchMessageAndSend(ProducerImpl.java:1426) [classes/:?] at org.apache.pulsar.client.impl.ProducerImpl.triggerFlush(ProducerImpl.java:1411) [classes/:?] at org.apache.pulsar.client.impl.ProducerBase.send(ProducerBase.java:112) [classes/:?] at org.apache.pulsar.client.impl.TypedMessageBuilderImpl.send(TypedMessageBuilderImpl.java:89) [classes/:?] at org.apache.pulsar.client.impl.ProducerBase.send(ProducerBase.java:63) [classes/:?] at org.apache.pulsar.broker.service.BatchMessageTest.testSendOverSizeMessage(BatchMessageTest.java:875) [test-classes/:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_201] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_201] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201] at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124) [testng-6.14.3.jar:?] at org.testng.internal.Invoker.invokeMethod(Invoker.java:583) [testng-6.14.3.jar:?] at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719) [testng-6.14.3.jar:?] at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989) [testng-6.14.3.jar:?] at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125) [testng-6.14.3.jar:?] at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109) [testng-6.14.3.jar:?] at org.testng.TestRunner.privateRun(TestRunner.java:648) [testng-6.14.3.jar:?] at org.testng.TestRunner.run(TestRunner.java:505) [testng-6.14.3.jar:?] at org.testng.SuiteRunner.runTest(SuiteRunner.java:455) [testng-6.14.3.jar:?] at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450) [testng-6.14.3.jar:?] at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415) [testng-6.14.3.jar:?] at org.testng.SuiteRunner.run(SuiteRunner.java:364) [testng-6.14.3.jar:?] at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) [testng-6.14.3.jar:?] at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84) [testng-6.14.3.jar:?] at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208) [testng-6.14.3.jar:?] at org.testng.TestNG.runSuitesLocally(TestNG.java:1137) [testng-6.14.3.jar:?] at org.testng.TestNG.runSuites(TestNG.java:1049) [testng-6.14.3.jar:?] at org.testng.TestNG.run(TestNG.java:1017) [testng-6.14.3.jar:?] at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:73) [testng-plugin.jar:?] at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123) [testng-plugin.jar:?] ``` **To Reproduce** Steps to reproduce the behavior: 1. Send a message which over than 5MB 2. check the client log 3. See error **Expected behavior** Don't release the ByteBuf since it is already released **Additional context** in master branch
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