Hi, It depends on which prop you are changing. To be safe, you need change it in all nodes.
发自我的 iPhone > 在 2013年12月28日，7:33，Pushparaj Motamari <[email protected]> 写道： > > Hi, > > I am working on a Hadoop cluster with 5 datanodes, and 1(NameNode+Job > Tracker) . If I would like to add a property to mapred-site.xml, then I need > to do that on all datanodes or doing it on JobTracker suffice? > > I am using hadoop-0.20.203.0rc1 version of hadoop > > Thanks
