DJOB TRACKER Can not start task tracker because java lang IllegalArgumentException Does not contain a valid host port authority 127 0 0 1 9001

Question

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:

<property>

<name>mapred.job.tracker</name>

<value>127.0.0.1:9001 </value></property>

Can anyone tell how to come out of this error?

Answer 1

Hey,

According to your property set up, there should not be any mistake in mapred-site.xml, I guess there is a silly mistake that there should not be any space between the value and XML closing tag.

Just modified the mapred-site.xml file by:

<property>

<name>mapred.job.tracker</name>

<value>127.0.0.1:9001</value> </property>