In our case, we have specific jobs that due to resource constraints can only be run serially (ie: 1 instance per machine).
Most of our jobs are more normal and can be run in parallel on the machines.

Arun C Murthy wrote:
Billy,


On Wed, Jan 02, 2008 at 01:38:06PM -0600, Billy wrote:
If I add this to a command line as a -jobconf should it be enforced?


This is a property of the TaskTracker and hence cannot be set on a per-job 
basis...

Say I have a job that I want to run only 1 map at a time per server


Could you describe your reasons?

Arun

I have tried this and look in the job.xml file and its set correctly but not enforced.



Billy



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