These errors occur when executing query statements in hive,

ERROR : Job Submission failed with exception 'java.net.ConnectException(Call From ************ failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused)'
java.net.ConnectException: Call From *************** to ****************:8032 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
	at sun.reflect.GeneratedConstructorAccessor34.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:831)
	at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:755)
	at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1549)
	at org.apache.hadoop.ipc.Client.call(Client.java:1491)
	at org.apache.hadoop.ipc.Client.call(Client.java:1388)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:118)
	at com.sun.proxy.$Proxy85.getNewApplication(Unknown Source)
	at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getNewApplication(ApplicationClientProtocolPBClientImpl.java:274)
	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
	at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
	at com.sun.proxy.$Proxy86.getNewApplication(Unknown Source)
	at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getNewApplication(YarnClientImpl.java:270)
	at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.createApplication(YarnClientImpl.java:278)
	at org.apache.hadoop.mapred.ResourceMgrDelegate.getNewJobID(ResourceMgrDelegate.java:196)
	at org.apache.hadoop.mapred.YARNRunner.getNewJobID(YARNRunner.java:271)
	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:157)
	at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1570)
	at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1567)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1567)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:576)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:571)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
	at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:571)
	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:562)
	at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.execute(ExecDriver.java:423)
	at org.apache.hadoop.hive.ql.exec.mr.MapRedTask.execute(MapRedTask.java:149)
	at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:205)
	at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:97)
	at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2664)
	at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:2335)
	at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:2011)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1709)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1703)
	at org.apache.hadoop.hive.ql.reexec.ReExecDriver.run(ReExecDriver.java:157)
	at org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:224)
	at org.apache.hive.service.cli.operation.SQLOperation.access$700(SQLOperation.java:87)
	at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork$1.run(SQLOperation.java:316)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
	at org.apache.hive.service.cli.operation.SQLOperation$BackgroundWork.run(SQLOperation.java:329)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Denied to connect
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
	at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:700)
	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:804)
	at org.apache.hadoop.ipc.Client$Connection.access$3800(Client.java:421)
	at org.apache.hadoop.ipc.Client.getConnection(Client.java:1606)
	at org.apache.hadoop.ipc.Client.call(Client.java:1435)
	... 54 more

ERROR : FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask. Call From ****** to hadoop102:8032 failed on connection exception: java.net.ConnectException: 拒绝连接; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

After careful analysis of this problem, the problem should be that the port belonging to 8032 has an error and has been prompting for abnormal connection. However, I set the 8032 port as the yarn port, which is also 8032. I found that my own yarn service has not been turned on. So you can enter the following command again

start-yarn.sh

Restart yarn and execute the query statement again to display success.