Python ImportError:没有名为happybase的模块

我有一个mapreduce程序，它使用happybase连接到Hbase。我得到以下错误
文件

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我看到happybase模块位于

/usr/local/lib/python2.7/site packages/happybase

执行map reduce作业的机器可能没有安装happybase？

我安装了hbase，但仍然出现错误。任何其他原因的想法。谢谢你找到这个问题的答案了吗？

/hadoop/yarn/local/usercache/aprakash/appcache/application_1407169690715_0025/container_1407169690715_0025_01_000002/./testhappybase.py, line 9, in <module>
import happybase
ImportError: No module named happybase

hadoop jar /usr/lib/hadoop-mapreduce/hadoop-streaming.jar -file
/home/aprakash/testhappybase.py -mapper /home/aprakash/testhappybase.py -file 
/home/aprakash/workspace/reducer.py -reducer /home/aprakash/workspace/reducer.py -input 
/user/aprakash/flume-channel/apache_access_combined/* -output /user/aprakash/flume-channel-output2