If you are using Java Servlet, then you can use HDFS Java API directly. Use FileSystem.listStatus instead of call shell, and put core-site.xml hdfs-site.xml on your classpath.
If you are using other programming language, maybe you can try HDFS's thrift interface On Fri, Nov 12, 2010 at 9:33 AM, sudharshan <sudhar...@wayne.edu> wrote: > > My question might be a numb but this is where I am stuck now please bear with > me . Basically I want to execute bin/hadoop dfs -ls when a user in a web > page clicks a button and displays 0 if the command is executed successfully > and -1 if not executed. I have a script which runs when the user clicks the > button in the web page. The script contains a system call of > system(bin/hadoop dfs -ls) . But it is not been executed due to file > permission of hdfs when issued from www. > After googling I came to know that hdfs executes commands by identifying the > user only as a superuser. I tried to change the posix permissions of hdfs > but it took no effect. So can some one help me out? > Thanks > -- > View this message in context: > http://old.nabble.com/how-to-perform-dfs--ls-as-a-request-from-www-tp30195698p30195698.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > > -- Best Regards Jeff Zhang
