tangjunjie created YARN-2318:
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             Summary: hadoop configuraion checker
                 Key: YARN-2318
                 URL: https://issues.apache.org/jira/browse/YARN-2318
             Project: Hadoop YARN
          Issue Type: New Feature
            Reporter: tangjunjie


hadoop  have a lot of config property. People will make mistake when modify 
configuration file. So hadoop can do config check tool .This tool can find 
mistake as follow.
if config 
<property>
          <name>mapreduce.tasktracker.reduce.tasks.maximu</name> <!--should be 
mapreduce.tasktracker.reduce.tasks.maximum-->
          <value>9</value>
          <description>The maximum number of reduce tasks that will be run
          simultaneously by a task tracker.
          </description>
        </property>

OR this tool can warn use deprecated property name and correct it.



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