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From Jing Zang <purplehear...@hotmail.com>
Subject Externalizing Hadoop configuration files
Date Wed, 16 Feb 2011 23:06:36 GMT

How do I externalize the parameters in hadoop configuration files so make it easier for the
operations team?. Ideally something like:
File: mapred-site.xml
 <property>        <name>mapred.job.tracker</name>        <value>${hadoop.mapred}</value>
   </property>
File: hadoop.conf (External to the app)hadoop.mapred=hadoop:9001
Anything as easy as Spring' sPropertyPlaceholderConfigurer or similar? How do you guys externalize
the parameters to a configuration file outside the app?
Thanks. 		 	   		  
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