hadoop配置好之後啟服務，jps能看到datanode程序，可是後臺的datanode日誌有如下錯誤，且50070埠上也是沒有活的節點
阿新 • • 發佈：2019-01-02
2015-04-22 14:17:29,908 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: For namenode master/192.168.1.100:53310 using DELETEREPORT_INTERVAL of 300000 msec BLOCKREPORT_INTERVAL of 21600000msec Initial delay: 0msec; heartBeatInterval=3000 2015-04-22 14:17:29,908 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in BPOfferService for Block pool BP-172857601-192.168.1.100-1429683180778 (storage id DS-1882029846-192.168.1.100-50010-1429520454466) service to master/192.168.1.100:53310 java.lang.NullPointerException at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.sendHeartBeat(BPServiceActor.java:439) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:525) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:676) at java.lang.Thread.run(Thread.java:744) 2015-04-22 14:17:34,910 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: For namenode master/192.168.1.100:53310 using DELETEREPORT_INTERVAL of 300000 msec BLOCKREPORT_INTERVAL of 21600000msec Initial delay: 0msec; heartBeatInterval=3000 2015-04-22 14:17:34,910 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in BPOfferService for Block pool BP-172857601-192.168.1.100-1429683180778 (storage id DS-1882029846-192.168.1.100-50010-1429520454466) service to master/192.168.1.100:53310 java.lang.NullPointerException at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.sendHeartBeat(BPServiceActor.java:439) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:525) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:676) at java.lang.Thread.run(Thread.java:744)