Unable to deliver event. Exception follows.配置出错

今天在进行hbase-kafka-flume 的集群集成时，我是三个节点，三个Kafka节点，二三节点flume收集信息到一节点flume，再同时打入hbase和kafka，结果在打开一节点的收集flume之后，再去打开二三节点时就报了下面的错。[ERROR - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:158)] Unable to deliver event. Exception follows.org.apac.