Dear Hadoop fellows,

We have been using Hadoop-0.18.3 to run MapReduce in web application. We have 
tried to run the application in both Jetty 6.1 and Tomcat 6.0.

At first, we directly call the mapreduce function in MapReduce, however found 
out that we were not able to access to HDFS in this way. So we tried to write a 
bash file as follows (to run the example jar for test):
########################
cd ~/hadoop-0.18.3
hadoop jar hadoop-0.18.3-examples.jar pi 1 10
echo 'done'
########################


And then we used Java Runtime.class to execute the bash file in cmd (we have 
successfully run the bash file in cmd before). However, the execution was stuck 
after displaying "Starting jobs". And no exception was found in any log file of 
Hadoop. I wonder if there is any configuration process to run MapReduce in 
Jetty/Tomcat. Any suggestion will be appreciated!

Thanks in advance.

Sincerely,
Guangxishui Yang

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