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  1. MariaDB ColumnStore
  2. MCOL-5044

Improve PP thread pool with a fair scheduler

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Details

    • New Feature
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 6.3.1
    • 22.08.1
    • PrimProc
    • None
    • 2021-17

    Description

      PP now uses PriorityThreadPool(PTP) that has 3 priority queues and supports Job re-scheduling(can happen if there is no space to service a primitive job request from EM).
      PTP doesn't equally distribute computation resources b/w primitive jobs that belongs to different queries so that the variance of query timings is linear to number of simultaneous queries.
      The suggestion is to implement a scheduling component that will try to fairly process mentioned primitive jobs.

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              dleeyh Daniel Lee (Inactive)
              drrtuy Roman
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                Resolved:

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