Index: conf/nutch-default.xml
===================================================================
--- conf/nutch-default.xml	(revision 357673)
+++ conf/nutch-default.xml	(working copy)
@@ -478,6 +478,13 @@
   simultaneously by a task tracker.
   </description>
 </property>
+	
+<property>
+  <name>mapred.child.heap.size</name>
+  <value>200m</value>
+  <description>The heap size (-Xmx) that will be used for task tracker child processes.
+  </description>
+</property>
 
 <property>
   <name>mapred.job.tracker.info.port</name>