Hadoop2.2 Eclipse

IP:  端口：

1. Open eclipse:
• Go to Windows -> Open Perspective -> Other -> Map/Reduce 
• Click "New Hadoop Location..."
• Fill in:
• Location Name -- localhost
• Map/Reduce Master
• Host -- localhost
• Port -- 54311 (related to the value of mapred.job.tracker in mapred-site.xml )
• DFS Master 
• Check "Use M/R Master Host"
• Port -- 8020 (related to the value of fs.default.name in core-site.xml )
• User name -- User (hadoop user name)
• Then press the Finish button.
2. File -> New -> Select a wizard -> Map/Reduce Project 
3. Configure Hadoop Installation (select the Hadoop installation directory -> {Hadoop-Home})
4. Then you can create your own Map/Reduce program and run it by choosing "Run on Hadoop". Have fun!

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hadoop程序问题：java.lang.IllegalArgumentException: Wrong FS: hdfs:/ expected file:///

hadoop需要把集群上的core-site.xml和hdfs-site.xml放到当前工程下的bin文件夹下面.

Hadoop2.2 Eclipse,布布扣,bubuko.com

原文：http://www.cnblogs.com/GrantYu/p/3654913.html