Hi Puneet: You can try this at mapreduce config:
<property> <name>mapred.child.java.opts</name> <value>-Xmx4000m</value> </property> Cheers Gustavo On Wed, Aug 7, 2013 at 11:43 AM, Puneet Agarwal <puagar...@yahoo.com> wrote: > 2013-08-07 20:07:30,119 FATAL org.apache.hadoop.mapred.Child: Error running > child : java.lang.OutOfMemoryError: Java heap space > > 2013-08-07 20:07:30,210 FATAL org.apache.giraph.graph.GraphMapper: > uncaughtException: OverrideExceptionHandler on thread Thread for syncLogs, > msg = Java heap space, exiting... > java.lang.OutOfMemoryError: Java heap space > > > Hi All, > > Can someone help me with the above error. I am using Hadoop 1.0.0. and I > tried increasing the HEAP size, using following command, but all in vain. > > export HADDOP_HEAP=4000 > > So far I am using only about 200 mb big data. I want to use few GBs of data > later. > > Please help > > Regards > > Puneet > > IIT Delhi > >