Investigate changes in SERVER-75754: Consider moving query.planCacheTotalSizeEstimateBytes and query.planCacheTotalQueryShapes into query.planCache sub-document.

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    • Type: Investigation
    • Resolution: Done
    • Priority: Minor - P4
    • No version
    • Affects Version/s: None
    • Component/s: None
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    • Not Needed

      Original Downstream Change Summary

      serverStatus fields:

      metrics.query.planCacheTotalQueryShapes
metrics.query.planCacheTotalSizeEstimateBytes

      moved to

      metrics.query.planCache.totalQueryShapes
metrics.query.planCache.totalSizeEstimateBytes

      Example planCache sub doc:

      "planCache" : {
        "totalQueryShapes" : NumberLong(0),
        "totalSizeEstimateBytes" : NumberLong(0),
        "classic" : {
                "hits" : NumberLong(0),
                "misses" : NumberLong(2)
        },
        "sbe" : {
                "hits" : NumberLong(0),
                "misses" : NumberLong(0)
        }
},

      Description of Linked Ticket

      In SERVER-70025 we introduced 4 new plan cache counters which are surfaced via query.planCache sub-document.

      We should consider moving all plan cache related counters into the query.planCache sub-document to group them logically together.

      The two which are currently housed in the query document are:

      • query.planCacheTotalSizeEstimateBytes
      • query.planCacheTotalQueryShapes

            Assignee:
            Rhys Howell
            Reporter:
            Backlog - Core Eng Program Management Team
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              Created:
              Updated:
              Resolved: