you just run "jps" on your terminal, here my jps output command on my namenode:
hadoop@node-17:~$ jps 18487 Jps 18150 NameNode 18385 SecondaryNameNode hadoop@node-17:~$ from that output I could make sure that my namenode is running well, how bout your namenode, are you sure it's running well or not? On Mon, Apr 20, 2015 at 7:24 PM, Anand Murali <anand_vi...@yahoo.com> wrote: > No. I shall try. Can you point me to jps resources. > > Thanks > > Anand Murali > 11/7, 'Anand Vihar', Kandasamy St, Mylapore > Chennai - 600 004, India > Ph: (044)- 28474593/ 43526162 (voicemail) > > > > On Monday, April 20, 2015 5:50 PM, Himawan Mahardianto < > mahardia...@ugm.ac.id> wrote: > > > have you try jps command and looking what hadoop service is running? > > On Mon, Apr 20, 2015 at 6:45 PM, Anand Murali <anand_vi...@yahoo.com> > wrote: > > Yes. All Hadoop commands. The error message is linked to IP address,a dn I > checked Hadoop wiki, this is a network issue on Ubuntu. Unfortunately, I > dont know much about networks. > > Anand Murali > 11/7, 'Anand Vihar', Kandasamy St, Mylapore > Chennai - 600 004, India > Ph: (044)- 28474593/ 43526162 (voicemail) > > > > On Monday, April 20, 2015 5:13 PM, Himawan Mahardianto < > mahardia...@ugm.ac.id> wrote: > > > have you try: > hdfs dfs -ls / > *with slash in the end of command? > > On Mon, Apr 20, 2015 at 5:50 PM, Anand Murali <anand_vi...@yahoo.com> > wrote: > > Hi All: > > I am using Ubuntu 14.10 desktop and Hadoop-2.6 pseudo mode. > Start-dfs/Stop-dfs is normal. However, after a couple of times of usage, > when I try to connect to HDFS,, I am refused connection. Find below > > anand_vihar@Latitude-E5540:~$ ssh localhost > Welcome to Ubuntu 14.10 (GNU/Linux 3.16.0-34-generic x86_64) > > * Documentation: https://help.ubuntu.com/ > > Last login: Mon Apr 20 15:43:58 2015 from localhost > anand_vihar@Latitude-E5540:~$ cd hadoop-2.6.0 > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ . .hadoop > /home/anand_vihar/hadoop-2.6.0 > /home/anand_vihar/jdk1.7.0_75 > /home/anand_vihar/hadoop-2.6.0 > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ start-dfs.sh > Starting namenodes on [localhost] > localhost: starting namenode, logging to > /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-namenode-Latitude-E5540.out > localhost: starting datanode, logging to > /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-datanode-Latitude-E5540.out > Starting secondary namenodes [0.0.0.0] > 0.0.0.0: starting secondarynamenode, logging to > /home/anand_vihar/hadoop-2.6.0/logs/hadoop-anand_vihar-secondarynamenode-Latitude-E5540.out > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ hdfs dfs -ls > ls: Call From Latitude-E5540/127.0.1.1 to localhost:9000 failed on > connection exception: java.net.ConnectException: Connection refused; For > more details see: http://wiki.apache.org/hadoop/ConnectionRefused > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ > > > > If I completely delete Hadoop and re-install, it starts working. Can > somebody advise on this issue. > > Many thanks > > > Regards > > Anand Murali > > > > > > > >
