Use dense bucket serialization for query latency histograms

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    • Type: Bug
    • Resolution: Unresolved
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: None
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    • Query Optimization
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    • 200
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      SERVER-134223 switched the four query latency histograms to
      kNonEmptyBucketCounts to reduce BSON serialization overhead and shrink serverStatus output.
      That made FTDC's diagnostic.data grow substantially, since the emitted field set varies between samples and the compression ratio gets worse.
       
      Switch the histograms back to kBucketCounts.

            Assignee:
            Milena Ivanova
            Reporter:
            Milena Ivanova
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              Created:
              Updated: