"stand alone mode" does not use any daemons - it's just a way of running mapreduce in a single process for quick testing and getting started. You need "pseudo distributed mode" if you want to run the daemons.
-Todd On Thu, Nov 5, 2009 at 12:06 AM, Mohan Agarwal <mohan.agarwa...@gmail.com>wrote: > Hi , > I have forget to mention that , I have installed *hadoop-0.20* in > *stand > alone mode *on my system. > > Thanking You > Mohan Agarwal > > On Thu, Nov 5, 2009 at 1:19 PM, Mohan Agarwal <mohan.agarwa...@gmail.com > >wrote: > > > Hi, > > I have installed *hadoop-0.20* on my system. I am facing a problem > > while starting hadoop using *start-all.sh* command. > > I am getting the following error : > > > > *localhost: starting secondarynamenode, logging to > > > /usr/lib/hadoop/bin/../logs/hadoop-root-secondarynamenode-magarwal.in.connectivasystems.com.out > > * > > localhost: Exception in thread "main" java.lang.NullPointerException > > localhost: at > > org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:134) > > localhost: at > > > org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:161) > > localhost: at > > > org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:165) > > localhost: at > > > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:131) > > localhost: at > > > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:115) > > localhost: at > > > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:476) > > > > Above error suggest that *Secondary Name Node* is not getting > started.*Although other things is working fine > > *, I am also using hive (with Derby Network Server as a Metadata Store ). > > From Hive CLI , hive query is getting executed. > > > > Please help me to solve this problem. > > > > Thanking You > > Mohan Agarwal > > > > >
