Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-79764

Ensure that streaming group over TS keeps running fully classic

    XMLWordPrintableJSON

Details

    • Icon: Task Task
    • Resolution: Duplicate
    • Icon: Major - P3 Major - P3
    • None
    • None
    • None
    • None
    • Query Integration

    Description

      See PM-3050 – streaming group is one of the optimizations, added in that project. It replaces $group with $_internalStreamingGroup if the input into the group is sorted on time and the group’s key includes a monotonic derivative of time.

      $_internalStreamingGroup isn’t supported in SBE and while the query could benefit from lowering the prefix up to it, we’d rather not risk perf regressions and block it from running in the hybrid mode until $_internalStreamingGroup is implemented in SBE.

      Attachments

        Activity

          People

            backlog-query-integration Backlog - Query Integration
            irina.yatsenko@mongodb.com Irina Yatsenko (Inactive)
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: