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From rchallapalli <...@git.apache.org>
Subject [GitHub] drill issue #822: DRILL-5457: Spill implementation for Hash Aggregate
Date Fri, 26 May 2017 16:36:16 GMT
Github user rchallapalli commented on the issue:

    https://github.com/apache/drill/pull/822
  
    And based on my initial testing, I observed that the hash-agg is only using half of the
memory allocated. Since the planner by default uses a 2-phase agg, the memory computation
logic divides the allocated memory between the 2 hash-agg operators in the plan. This is grossly
in-efficient. And every test written would need to be modified once this issue gets resolved.
Hence I would push for a fix sooner than later


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