Once I've done configuring Hadoop, checked the running process status by jps command. Only NameNode, Secondarynamenode and Datanode were running not Jobtracker and Tasktracker. Then I opened the Jobtracker log file, the error was: :
Can not start task tracker because java.lang.IllegalArgumentException: Does not contain a valid host:port authority: 127.0.0.1:9001
My mapred-site.xml file below:
Can anyone tell how to come out of this error?