Add orphans info in `collStats` aggregation stage output

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    • Fully Compatible
    • Sharding EMEA 2022-03-21
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      With the introduction of ranges, chunks distribution will become much less meaningful to evaluate whether a collection is balanced or not.

      Objective of this ticket is to return orphans as part of the collStats aggregation stage's output so that users can rely on some new metric to evaluate the balancing status.

      To get the actual size of a collection on a shard, some example of metrics may be dataSize - orphansSize or countDocuments - countOrphans.

        1. sharded-aggregation.json
          56 kB
          Allison Easton
        2. sharded-runCommand.json
          83 kB
          Allison Easton
        3. unsharded-aggregation.json
          27 kB
          Allison Easton
        4. unsharded-runCommand.json
          27 kB
          Allison Easton

              Assignee:
              Allison Easton
              Reporter:
              Pierlauro Sciarelli
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                Created:
                Updated:
                Resolved: