Github user mridulm commented on the issue:
    @squito My concern is, in large workloads, some nodes simply become bad for 
some tasks (transient env or hardware issues, colocating containers, etc) while 
being fine for others; speculative tasks should alleviate performance concerns 
and not increase chances of application failure due to locality preference 
affinity. For cluster sizes which are very small, speculative execution is less 
relevant than for those which are large - and here we are tuning for the former.


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