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Module Mapred_tasks.Ord

module Ord: sig .. end

type t = Mapred_tasks.task 
val compare : Mapred_tasks.task -> Mapred_tasks.task -> int
Compare here the tasks in an execution-friendly order, i.e. so that Mapred_sched.executable_tasks returns a reasonably ordered list.

Sorting:

  • `Map < `Sort < `Shuffle
  • within map and sort, just sort by ID
  • Shuffle: sort first by round (look at map_id delta, and at span of partitions), then by IDs

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