Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/2270
While I'm working on #2261 and also seeing this PR, I thought about
providing generic grouping which has a interface to update `score` of tasks,
and run shuffle grouping based on score, like we are doing with
LoadAwareShuffleGrouping. It may bring flexibility of combining several factors
like load, locality (network), and others if any.
If we plan to consider load into locality aware shuffle grouping and don't
think it should be flexible, we can just go on. Otherwise we may want to have
this.
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