????????????????????????????????????flink??????????????????????????????????????????????????????????slots??????????100+????????????TM???????? Connection timed out ????????????????flink????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
?????????? flink?????? 1.9.1 ??????????standalone??????tm??slot??150+????????????checkpoint ???????????????? taskmanager.heap.size: 1536m taskmanager.memory.fraction: 0.1 env.java.opts.taskmanager: -XX:+UseG1GC -Xss512K taskmanager.numberOfTaskSlots: 1 taskmanager.network.memory.fraction: 0.3 taskmanager.network.memory.min: 512mb taskmanager.network.memory.max: 512mb ?????????????????????????? org.apache.flink.runtime.io.network.netty.exception.LocalTransportException: Connection timed out (connection to '/10.20.84.44:37391') at org.apache.flink.runtime.io.network.netty.CreditBasedPartitionRequestClientHandler.exceptionCaught(CreditBasedPartitionRequestClientHandler.java:165) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:256) at org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:256) at org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerAdapter.exceptionCaught(ChannelHandlerAdapter.java:87) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:256) at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.exceptionCaught(DefaultChannelPipeline.java:1401) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:285) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:264) at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireExceptionCaught(DefaultChannelPipeline.java:953) at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.handleReadException(AbstractNioByteChannel.java:125) at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:174) at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:656) at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:591) at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:508) at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:470) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:909) at java.lang.Thread.run(Thread.java:748) Caused by: java.io.IOException: Connection timed out at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:192) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at org.apache.flink.shaded.netty4.io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288) at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1132) at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:347) at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148) ... 6 more flink??????blink 1.5.1 ??????????standalone??????tm??slot??150+????????????checkpoint ???????????????? taskmanager.heap.mb: 768 taskmanager.direct.memory.mb: 512 env.java.opts.taskmanager: -XX:+UseG1GC -Xss512K taskmanager.numberOfTaskSlots: 1 taskmanager.network.memory.min: 536870912 taskmanager.network.memory.max: 536870912 ??????blink??????????????????????????????????????Connection timed out??????????????????