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  1. IMPALA
  2. IMPALA-2713

Improve scalability of incremental stats

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: Impala 2.2.4, Impala 2.3.0
    • Fix Version/s: None
    • Component/s: None

      Description

      The memory overhead of incremental stats is 400B per column per partition. We currently set a hard limit on the maximum size of intermediate stats stored with is 200MB per table. For large tables with a large number of partitions/columns, this limit can easily be exceeded, making incremental stats unusable. We need a scalable solution for storing and using incremental stats.

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              • Assignee:
                Unassigned
                Reporter:
                dtsirogiannis Dimitris Tsirogiannis
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                Dates

                • Created:
                  Updated:
                  Resolved: