Hi Shirsh, You need to increase the heap size of the JVM for the changes you made for mapred.child to take effect These changes need to be made in the files of the hadoop configuration folder.
In hadoop-env.sh increase the heap size to may be 2000.(I think this property by default will be commented.) Then in the mapred-default.xml change( in the src folder) overwrite the other properties like mapred.map.child.java.opts. I hope this helps. On Thu, Apr 5, 2012 at 1:26 PM, shrish bajpai <random_unk...@hotmail.co.uk>wrote: > Hi, > I have tried the following combinations of bootstrap actions to increase > the heap size of my job but none of them seem to work: > > --mapred-key-value mapred.child.java.opts=-Xmx1024m > --mapred-key-value mapred.child.ulimit=unlimited > > --mapred-key-value mapred.map.child.java.opts=-Xmx1024m > --mapred-key-value mapred.map.child.ulimit=unlimited > > -m mapred.map.child.java.opts=-Xmx1024m > -m mapred.map.child.ulimit=unlimited > > -m mapred.child.java.opts=-Xmx1024m > -m mapred.child.ulimit=unlimited > > What is the right syntax? > > Thanks > > Shrish > >
