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  1. IMPALA
  2. IMPALA-4679

Impala to set query mem_limit automatically for compute stats

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: Impala 2.8.0
    • Fix Version/s: None
    • Component/s: Backend, Frontend
    • Labels:
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      Description

      With Multi-threading turned on for Compute Stats, the memory usage in the SCAN is a lot more deterministic. In fact, the memory usage in SCAN and AGG can be pre-determined in the planner. Therefore, it is feasible to set the mem_limit automatically for compute stats query.

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              • Assignee:
                marcelk Marcel Kinard
                Reporter:
                alan@cloudera.com Alan Choi
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                • Created:
                  Updated:
                  Resolved: