title: hadoop while running my program following message displayed. what does it mean?
body: <p>I was running hadoop program and I got following message. what does it mean?
  should I need to worry about this message?</p>
  
  <pre><code>INFO hdfs.DFSClient: Exception in createBlockOutputStream
  java.io.EOFException: Premature EOF: no length prefix available
  
  at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:531)
  14/12/15 16:39:36 WARN hdfs.DFSClient: Error Recovery for block BP-1435953827-192.168.33.125-1417678953955:blk_1073749097_67711 in pipeline 192.168.33.199:50010, 192.168.33.125:50010, 192.168.33.123:50010: bad datanode 192.168.33.199:50010
  </code></pre>