Error in starting hadoop Job Tracker
hadoop
Solution
The problem is the following lines should on into mapred-site.xml and NOT hdfs-site.xml,
<property>
<name>mapred.job.tracker</name>
<value>localhost:9101</value>
</property>
By the way why are you trying to run Hadoop in Windows? For development? You don't have a linux machine or reluctant to install one?
One more thing, you usually put this property in core-site.xml not hdfs-site.xml,
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9100</value>
</property>
Problem
I tried to run a simple program in hadoop using Windows-Cygwin. I am able to start the namenode . The jobtracker start however fails with exception : ``` FATAL mapred.JobTracker: java.lang.IllegalArgumentException: Does not contain a valid host:port authority: local at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:162) at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:128) at org.apache.hadoop.mapred.JobTracker.getAddress(JobTracker.java:2560) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2200) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2192) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2186) at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:300) at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:291) at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:4978) ``` I tried all possible methods to resolve this ,but in vain. Any pointers will greatly help me. Hdfs-site.xml configurations : ``` <configuration><br> <property> <name>fs.default.name< /name> <value>hdfs://localhost:9100</value> </property> <property> <name>mapred.job.tracker< /name> <value>localhost:9101< /value> </property> <property> <name>dfs.replication< /name> <value>1</value> </property> </configuration> ```