Toby, On Thu, Nov 15, 2007 at 11:54:09AM -0500, Toby DiPasquale wrote: >Hi all, > >Am I missing something here? I fire up 4 MR jobs on a cluster, giving >each job one reducer and 1/4 of the available mappers, and only one of >them runs at once. Is there something special I have to do to get them >to run concurrently? Thanks for any help. >
The JobTracker just picks a task of the highest priority job in it's queue and assigns a task from that job to a TaskTracker. Assuming all your jobs are of the same priority I'm not very surprised at that behaviour... Arun >-- >Toby DiPasquale
