Hi, I want to use: hadoop jar <my dir>/hadoop-streaming-0.20.2-cdh3u3.jar -inputformat org.apache.hadoop.streaming.WholeFileInputFormat
so, I download code from : https://github.com/tomwhite/hadoop-book/tree/master/ch07/src/main/java WholeFileInputFormat.java WholeFileRecordReader.java and package the java file with : package org.apache.hadoop.streaming; solution A: copy WholeFileInputFormat.java , WholeFileRecordReader.java to hadoop-0.20.2-cdh3u3/src/contrib/streaming/src/java/org/apache/hadoop/streaming/ then javac -classpath /usr/lib/hadoop-0.20/hadoop-0.20.2-cdh3u3-core.jar:/usr/lib/hadoop-0.20:/usr/lib/hadoop-0.20/lib/* -d WFInputFormatClassNew hadoop-0.20.2-cdh3u3/src/contrib/streaming/src/java/org/apache/hadoop/streaming/*.java there is a lot of error solution B: compile the java file WholeFileInputFormat.java , WholeFileRecordReader.java: javac -classpath /usr/lib/hadoop-0.20/hadoop-0.20.2-cdh3u3-core.jar:/usr/lib/hadoop-0.20/*:/usr/lib/hadoop-0.20/lib/* -d WFInputFormatClass <two java file> copy /usr/lib/hadoop/contrib/streaming/hadoop-streaming-0.20.2-cdh3u3.jar to <my dir> then : jar uf hadoop-streaming-0.20.2-cdh3u3.jar WFInputFormatClass/org/apache/hadoop/streaming/WholeFileRecordReader.class jar uf hadoop-streaming-0.20.2-cdh3u3.jar WFInputFormatClass/org/apache/hadoop/streaming/WholeFileInputFormat.class there is no error, but when I run: hadoop jar <my dir>/hadoop-streaming-0.20.2-cdh3u3.jar -inputformat org.apache.hadoop.streaming.WholeFileInputFormat ....... there is error: -inputformat : class not found : org.apache.hadoop.streaming.WholeFileInputFormat what's wrong with the two solution? or is there any new solution? thx. Ring