hadoop2.2.0 maprd-site.xml--Node health script variables

<!--  Node health script variables -->

<property>  <name>mapreduce.tasktracker.healthchecker.script.path</name>  <value></value>  <description>Absolute path to the script which is  periodicallyrun by the node health monitoring service to determine if  the node is healthy or not. If the value of this key is empty or the  file does not exist in the location configured here, the node health  monitoring service is not started.</description></property>

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<property>  <name>mapreduce.tasktracker.healthchecker.interval</name>  <value>60000</value>  <description>Frequency of the node health script to be run,  in milliseconds</description></property>

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<property>  <name>mapreduce.tasktracker.healthchecker.script.timeout</name>  <value>600000</value>  <description>Time after node health script should be killed if   unresponsive and considered that the script has failed.</description></property>

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<property>  <name>mapreduce.tasktracker.healthchecker.script.args</name>  <value></value>  <description>List of arguments which are to be passed to   node health script when it is being launched comma seperated.  </description></property>

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