Hello, I am following this blog, http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29, instructions to get single hadoop node running. Unfortunately, I am getting NullPointerException when I start hadoop with ./start-all.sh.
Another question I have is regarding hadoop-site.xml, where I have set hadoop.tmp.dir to be /home/hadoop/hadoop-datastore. But hadoop is creating dfs in /tmp/hadoop-hadoop/dfs? Java Version: [EMAIL PROTECTED] ~]$ java -version java version "1.6.0_06" Java(TM) SE Runtime Environment (build 1.6.0_06-b02) Java HotSpot(TM) Client VM (build 10.0-b22, mixed mode) Hadoop version: hadoop-0.17.0 [EMAIL PROTECTED] bin]$ ./start-all.sh starting namenode, logging to /usr/local/hadoop/bin/../logs/hadoop-hadoop-namenode-hadoop1.out localhost: starting datanode, logging to /usr/local/hadoop/bin/../logs/hadoop-hadoop-datanode-hadoop1.out localhost: starting secondarynamenode, logging to /usr/local/hadoop/bin/../logs/hadoop-hadoop-secondarynamenode-hadoop1.out localhost: Exception in thread "main" java.lang.NullPointerException localhost: at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:119) localhost: at org.apache.hadoop.dfs.SecondaryNameNode.<init>(SecondaryNameNode.java:118) localhost: at org.apache.hadoop.dfs.SecondaryNameNode.main(SecondaryNameNode.java:495) starting jobtracker, logging to /usr/local/hadoop/bin/../logs/hadoop-hadoop-jobtracker-hadoop1.out localhost: starting tasktracker, logging to /usr/local/hadoop/bin/../logs/hadoop-hadoop-tasktracker-hadoop1.out [EMAIL PROTECTED] logs]$ vi hadoop-hadoop-jobtracker-hadoop1.log ************************************************************/ 2008-06-20 16:28:35,086 INFO org.apache.hadoop.mapred.JobTracker: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting JobTracker STARTUP_MSG: host = hadoop1/192.168.0.2 STARTUP_MSG: args = [] STARTUP_MSG: version = 0.17.0 STARTUP_MSG: build = http://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.17 -r 656523; compiled by 'hadoopqa' on Thu May 15 07:22:55 UTC 2008 ************************************************************/ 2008-06-20 16:28:35,181 FATAL org.apache.hadoop.mapred.JobTracker: java.lang.RuntimeException: Not a host:port pair: local at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:121) at org.apache.hadoop.mapred.JobTracker.getAddress(JobTracker.java:768) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:659) at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:141) at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:2319) 2008-06-20 16:28:35,182 INFO org.apache.hadoop.mapred.JobTracker: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down JobTracker at hadoop1/192.168.0.2 ************************************************************/
