I'm trying to set a System Property in the Hadoop config, so my jobs will know which cluster they are running on. I think I should be able to do this with -Dname=value in "mapred.child.java.opts" (example below), but the setting is ignored.
In hadoop-site.xml I have:
But the job conf through the web server indicates:
mapred.child.java.opts -Xmx1024M -Duser.timezone=UTC
I'm using Hadoop-0.17.2.1.
Any tips on why my setting is not picked up?
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Grokbase › Groups › Hadoop › common-user › April 2009