Hi, guys: I would like to do some minor modification of Hadoop (just to insert some print codes into particular places). And I have the following questions:
1. It seems there are three parts of Hadoop: common, hdfs, mapred. And they are packed as three independent jar packages. Could I only modify one part (eg, common) and pack a new jar package without modifying the rest two. 2. I have try to import the folder hadoop-0.21.0/common into eclipse as a project. But eclipse fails to recognize it as an existing project. But if I import folder hadoop-0.21.0 as a existing project, it works. However, I only want to modify common part. How could I only modify common part and export a new common jar package without modifying the rest two parts. -- Best Regards! Sincerely Bo Sang
