How to disable Garbage collection error in hadoop?

So I'm running a hadoop program, which repeatedly gives me this error

java.lang.OutOfMemoryError: GC overhead limit exceeded

From my knowledge, this error occurs because too much time is being spent in garbage collection. However, you can suppress this error by using the argument.

-XX:-UseGCOverheadLimit

Now, my question is, where do I give this argument in the hadoop framework. I guess I have to provide it in mapred-site.xml. But how? Currently the mapred-site.xml file looks like as shown below. How should I add that -XX option there? Should I just change -Xmx16384m to -Xmx16384m -XX:-UseGCOverheadLimit?

<configuration>
<property>
  <name>mapred.job.tracker</name>
  <value>localhost:54311</value>
  <description>The host and port that the MapReduce job tracker runs
  at.  If "local", then jobs are run in-process as a single map
  and reduce task.
  </description>
 </property>
 <property>
    <name>mapred.child.java.opts</name>
    <value>-Xmx16384m</value>
  </property>
</configuration>