Spring-XD部署失败

Question

Spring-XD在3个容器，1个Admin，1个Zk环境中运行。我的流定义如下。

主题：测试＆gt;处理器| http客户端＆gt; namedchannel

当我尝试在其中一个环境中部署流时，我收到以下异常。它在其他环境中运行良好。 Spring-XD版本是1.2.1

org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.integration.monitor.IntegrationMBeanExporter#0#0b0d7c9d-ba16-4f2c-9c9b-63e2284a42c0'; nested exception is org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [MessageChannelMonitor: [name=output, sends=0]] with key 'org.springframework.integration:type=MessageChannel,name=output'; nested exception is javax.management.InstanceAlreadyExistsException: 
,component=MessageChannel,name=output
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176)
    at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)
    at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)
    at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)
    at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:770)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)