Paul Sutter wrote:
priority vs pretend dates: whatever is most trivial, i'm in favor. we
could
certainly use it today.
delaying reducers: regardless of the bottleneck in the system, andrzej's
problem was that reducers were sitting idle while the mappers of another
task were running.
Exactly. There is no point in starting any reducers if we haven't even
scheduled a single map task for the job. As soon as at least one map
task is scheduled, I'm fine with starting reducers, I agree with
arguments about network bottlenecks that Doug presented.
--
Best regards,
Andrzej Bialecki <><
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