Github user rxin commented on the issue: https://github.com/apache/spark/pull/14080 There is a test failure ``` [error] Test org.apache.spark.network.sasl.SaslIntegrationSuite.testAppIsolation failed: java.lang.RuntimeException: java.lang.NullPointerException [error] at org.apache.spark.network.shuffle.ExternalShuffleBlockHandler.handleMessage(ExternalShuffleBlockHandler.java:100) [error] at org.apache.spark.network.shuffle.ExternalShuffleBlockHandler.receive(ExternalShuffleBlockHandler.java:83) [error] at org.apache.spark.network.sasl.SaslRpcHandler.receive(SaslRpcHandler.java:80) [error] at org.apache.spark.network.server.TransportRequestHandler.processRpcRequest(TransportRequestHandler.java:158) [error] at org.apache.spark.network.server.TransportRequestHandler.handle(TransportRequestHandler.java:106) [error] at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:119) [error] at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:51) [error] at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:85) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846) [error] at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) [error] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) [error] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111) [error] at java.lang.Thread.run(Thread.java:745) [error] , took 0.073 sec [error] at org.apache.spark.network.client.TransportResponseHandler.handle(TransportResponseHandler.java:190) [error] at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:121) [error] at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:51) [error] at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:85) [error] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308) [error] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294) [error] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846) [error] at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) [error] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) [error] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) [error] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111) [error] at java.lang.Thread.run(Thread.java:745) [info] Test org.apache.spark.network.sasl.SaslIntegrationSuite.testNoSaslClient started [info] Test org.apache.spark.network.sasl.SaslIntegrationSuite.testNoSaslServer started [info] Test org.apache.spark.network.sasl.SaslIntegrationSuite.testBadClient started [info] Test run finished: 1 failed, 0 ignored, 5 total, 1.741s ``` @lovexi you can run the tests locally too with build/sbt test network-shuffle
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