Hi, I am trying to change the source code of hadoop-mapreduce project and at the end need to make a jar file of project exactly like what is released as hadoop-core-1.0.3.jar to run sample program with that.How can i make jar file from hadoop source code? I have added the maven-jar-plugin to the pom of hadoop-common project to create jar file ,but the generated jar file is not the same as hadoop-core-1.0.3.jar. Actually it dosnot have all the files included in hadoop-core-1.0.3.jar ! How can i make a jar file exaclty same as the hadoop-core-1.0.3.jar ? Best, Samaneh