Flume—[ERROR - org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run，LifecycleSupervisor.java:251] Unable to start EventDrivenSourceRunner:

2021-03-19 08:29:48,243 (lifecycleSupervisor-1-3) [ERROR - org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:251)] Unable to start EventDrivenSourceRunner: { source:Avro source r1: { bindAddress: hadoop102, port: 4142 } } - Exception follows.

org.apache.flume.FlumeException: Failed to set up server socket

at org.apache.flume.source.AvroSource.start(AvroSource.java:207)

at org.apache.flume.source.EventDrivenSourceRunner.start(EventDrivenSourceRunner.java:44)

at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:249)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)

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: org.jboss.netty.channel.ChannelException: Failed to bind to: hadoop102/172.16.4.102:4142

at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)

at org.apache.avro.ipc.NettyServer.<init>(NettyServer.java:106)

at org.apache.flume.source.AvroSource.start(AvroSource.java:202)

... 9 more

Caused by: java.net.BindException: 地址已在使用

at sun.nio.ch.Net.bind0(Native Method)

at sun.nio.ch.Net.bind(Net.java:433)

at sun.nio.ch.Net.bind(Net.java:425)

at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)

at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)

at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)

at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)

at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)

at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)

at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)

at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)