Hi Tina, Oozie is not meant currently to influence resource management. It coordinates and tracks workflows but the decision about number of M-R tasks (aka number of nodes parallelly executing the workflow) rests with Hadoop. Of course, we can pass mapreduce configuration parameters through Oozie, such as split size, number of map and reduce tasks desired, to influence resource management, but that is done at a best-effort basis in principle.
Can you provide us more details of your use-case? It sounds interesting but not sure if Oozie would be the place for this kind of logic. ‹ Mona On 5/19/14, 3:08 AM, "Tina Samuel" <[email protected]> wrote: >I would like to modify the Oozie code to introduce a new scheduling >pattern >in Hadoop. I am new to Oozie. I read that there is a file called >workflow.xml which has the actions that are to be performed by Hadoop. I >want to introduce a new field to the job, something like a JOB_TYPE. For >eg, if a job belongs to TYPE_1, then it should be replicated in all the >worker nodes. If a job belongs to TYPE_2, then it should be replicated in >only a fraction of nodes. Is it possible to modify the parser of Oozie >which parses the workflow.xml? Please do help > >-- >Tina
