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  1. IMPALA
  2. IMPALA-5641

mem-estimate should never be less than mem-reservation

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      Once we switch over to the new buffer pool, the mem-reservation is a hard floor for the actual memory consumption. The planner's resource profiles should reflect this, instead of reporting things like this:

      02:HASH JOIN [LEFT OUTER JOIN]
      |  hash predicates: 2 + a.id = b.id - 2
      |  fk/pk conjuncts: assumed fk/pk
      |  other join predicates: a.int_col <= b.bigint_col + 97, a.int_col >= 0 + b.bigint_col
      |  other predicates: CAST(b.double_col AS DECIMAL(3,2)) > 11.1
      |  mem-estimate=15.68KB mem-reservation=136.00MB
      

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            • Assignee:
              tarmstrong Tim Armstrong
              Reporter:
              tarmstrong Tim Armstrong
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