Hi, team. I run the maven command to run unit test, and have a NPE.
command: ./build/mvn test refer to https://spark.apache.org/docs/latest/building-spark.html#running-tests NPE is as follow: 22/05/20 16:32:45.450 main WARN AbstractChannelHandlerContext: Failed to mark a promise as failure because it has succeeded already: DefaultChannelPromise@366ef90e(success) java.lang.NullPointerException: null at org.apache.spark.network.crypto.TransportCipher$EncryptionHandler.close(TransportCipher.java:137) ~[classes/:?] at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:622) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:606) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.DefaultChannelPipeline.close(DefaultChannelPipeline.java:994) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.AbstractChannel.close(AbstractChannel.java:280) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.embedded.EmbeddedChannel.close(EmbeddedChannel.java:568) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.embedded.EmbeddedChannel.close(EmbeddedChannel.java:555) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.embedded.EmbeddedChannel.finish(EmbeddedChannel.java:503) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at io.netty.channel.embedded.EmbeddedChannel.finish(EmbeddedChannel.java:483) ~[netty-transport-4.1.77.Final.jar:4.1.77.Final] at org.apache.spark.network.crypto.TransportCipherSuite.testBufferNotLeaksOnInternalError(TransportCipherSuite.java:78) ~[test-classes/:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_291] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_291] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_291] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_291] at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59) ~[junit-4.13.2.jar:4.13.2] at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) ~[junit-4.13.2.jar:4.13.2] at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) ~[junit-4.13.2.jar:4.13.2] at org.junit.runners.ParentRunner.run(ParentRunner.java:413) ~[junit-4.13.2.jar:4.13.2] at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:364) ~[surefire-junit4-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272) ~[surefire-junit4-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:237) ~[surefire-junit4-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:158) ~[surefire-junit4-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428) ~[surefire-booter-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162) ~[surefire-booter-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562) ~[surefire-booter-3.0.0-M5.jar:3.0.0-M5] at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548) ~[surefire-booter-3.0.0-M5.jar:3.0.0-M5] Anyone with same exception? -- Best! Qian SUN
