Besides Speculative execution , Tasks can be attempted multiple times due to failures.
So you can see 3 attempt there. On Tue, Jun 12, 2012 at 5:08 PM, 林育智 <mylinyu...@gmail.com> wrote: > hi all: > I set the mapred.map.tasks.speculative.execution=false,but in the > userlogs,you could found 3 attempt map task's log. have i miss something? > expect your help. thanks. >
