Dear All: Has anyone encountered this error and if so how have you fixed it other then re-installing Hadoop or re-starting start-dfs.sh when you have already started after boot. 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/ 1 package can be updated. 1 update is a security update. Last login: Wed Apr 22 13:33:26 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$ hadoop version Hadoop 2.6.0 Subversion https://git-wip-us.apache.org/repos/asf/hadoop.git -r e3496499ecb8d220fba99dc5ed4c99c8f9e33bb1 Compiled by jenkins on 2014-11-13T21:10Z Compiled with protoc 2.5.0 >From source with checksum 18e43357c8f927c0695f1e9522859d6a This command was run using /home/anand_vihar/hadoop-2.6.0/share/hadoop/common/hadoop-common-2.6.0.jar 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$ I have checked http://wiki.apache.org/hadoop/ConnectionRefused but there is no fix to the problem rather it seems to be a Ubuntu network problem. I have many times killed nanenode/datanode/secondary data note, shutdown and restarted, but this error still appears. The only way seems to be re-installing hadoop. Please advise or refer. Many thanks, Regards, Anand Murali 11/7, 'Anand Vihar', Kandasamy St, MylaporeChennai - 600 004, IndiaPh: (044)- 28474593/ 43526162 (voicemail)
