Google is your friend ;) https://issues.apache.org/jira/browse/HADOOP-5687
J-D On Thu, Mar 18, 2010 at 1:29 PM, Scott <skes...@weather.com> wrote: > We have a working 10 node cluster and are trying to add an 11th box (insert > Spinal Tap joke here). The box (Centos Linux) was built in an identical > manner to the other 10 and has the same version of hadoop (0.20.2). The > configs are the exact same as the other nodes. However when trying to start > the hadoop daemons it throws a NPE. Here is all that is written to the > logs. Any idea whats causing this? > > ************************************************************/ > 2010-03-18 16:09:42,993 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG: > /************************************************************ > STARTUP_MSG: Starting DataNode > STARTUP_MSG: host = hadoop0b10/192.168.60.100 > STARTUP_MSG: args = [] > STARTUP_MSG: version = 0.20.2 > STARTUP_MSG: build = > https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r > 911707; compiled by 'chrisdo' on Fri Feb > 19 08:07:34 UTC 2010 > ************************************************************/ > 2010-03-18 16:09:43,058 ERROR > org.apache.hadoop.hdfs.server.datanode.DataNode: > java.lang.NullPointerException > at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:134) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:156) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:160) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:246) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:216) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1283) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1238) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1246) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1368) > > 2010-03-18 16:09:43,059 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: > /************************************************************ > SHUTDOWN_MSG: Shutting down DataNode at hadoop0b10/192.168.60.100 > ************************************************************/ > >
