On Thu, Aug 21, 2008 at 3:14 PM, Gopal Gandhi <[EMAIL PROTECTED]> wrote: > I am using Hadoop streaming and I need to pass arguments to my map/reduce > script. Because a map/reduce script is triggered by hadoop, like > hadoop .... -file MAPPER -mapper "$MAPPER" -file REDUCER -reducer "$REDUCER" > ... > How can I pass arguments to MAPPER? > > I tried -cmdenv name=val , but it does not work. > Anybody can help me? Thanks lot.
I use -jobconf, for example hadoop ... -jobconf my.mapper.arg1="foobar" and in the map script, I get this by reading the environment variable my_mapper_arg1 Hope this helps, Rong-En Fan > > > >
