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  1. MongoDB Database Tools
  2. TOOLS-3376

Investigate changes in SERVER-80491: Expose more granular metrics around balancing round

    • Type: Icon: Investigation Investigation
    • Resolution: Done
    • Priority: Icon: Minor - P4 Minor - P4
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    • Affects Version/s: None
    • Component/s: Mongosync team
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      Original Downstream Change Summary

      Logs entries in config.actionlog related to balancer round (

      {what: "balancer.round"}

      ) contains a new section that contains details about balancer round timing:
      {"times":

      { "selectionTimeMillis": <>, "throttleTimeMillis": <>, "migrationTimeMillis": <> }

      Description of Linked Ticket

      We observed that in large cluster with lots of collections/chunks the balancer can take several seconds to decide which chunks to move in each round.

      The goal of this ticket is to include this time in the round details stored in config.actionlog

            Assignee:
            Unassigned Unassigned
            Reporter:
            backlog-server-pm Backlog - Core Eng Program Management Team
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              Created:
              Updated:
              Resolved: