hadoop2.2.0 maprd-site.xml--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>

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

<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>

<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>