Adarsh, The inputformat is present in test jar. So, pass -libjars <full path to testjar> to your command. libjars option should be passed before program specific options. So, it should be just after your -D parameters.
-Amareshwari On 3/31/11 3:45 PM, "Adarsh Sharma" <adarsh.sha...@orkash.com> wrote: Amareshwari Sri Ramadasu wrote: Re: Hadoop Pipes Error You can not run it with TextInputFormat. You should run it with org.apache.hadoop.mapred.pipes .WordCountInputFormat. You can pass the input format by passing it in -inputformat option. I did not try it myself, but it should work. Here is the command that I am trying and it results in exception: bash-3.2$ bin/hadoop pipes -D hadoop.pipes.java.recordreader=true -D hadoop.pipes.java.recordwriter=true -inputformat org.apache.hadoop.mapred.pipes.WordCountInputFormat -input gutenberg -output gutenberg-out101 -program bin/wordcount-nopipe Exception in thread "main" java.lang.ClassNotFoundException: org.apache.hadoop.mapred.pipes.WordCountInputFormat at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:762) at org.apache.hadoop.mapred.pipes.Submitter.getClass(Submitter.java:372) at org.apache.hadoop.mapred.pipes.Submitter.run(Submitter.java:421) at org.apache.hadoop.mapred.pipes.Submitter.main(Submitter.java:494) Thanks , Adarsh