某一个作业报错：

16/06/07 08:18:35 INFO hdfs.DFSClient: Abandoning BP-335176858-10.151.11.121-1433739729352:blk_1129708823_56042075

16/06/07 08:18:35 INFO hdfs.DFSClient: Excluding datanode DatanodeInfoWithStorage[10.130.81.114:50010,DS-d5f8c720-38a2-40b5-be57-ede553daae68,DISK] 16/06/07 08:18:35 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.net.ConnectException: Connection refused     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:530)     at org.apache.hadoop.hdfs.DFSOutputStream.createSocketForPipeline(DFSOutputStream.java:1782)     at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1559)     at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1512)     at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:668)

 

解决方法：

登录到10.130.81.114后，运行：

hadoop-daemon.sh start datanode