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  1. Core Server
  2. SERVER-102543

$listClusterCatalog returns null on `shards` field on replica set clusters

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    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 8.2.0-rc0
    • Affects Version/s: 8.1.0-rc0
    • Component/s: None
    • None
    • Catalog and Routing
    • Fully Compatible
    • ALL
    • v8.1, v8.0
    • CAR Team 2025-03-31
    • 1
    • None
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      The $listClusterCatalog returns [null] on the shards field when it's executed against a replica set cluster.

      The following mongosh commands reproduce the issue:

      > use test
> db.createCollection("coll")
> db.aggregate([{$listClusterCatalog:{shards:true}}])
[
  {
    ns: 'dba.coll',
    db: 'dba',
    type: 'collection',
    options: {},
    info: {
      readOnly: false,
      uuid: UUID('74a83193-b067-4b53-bb95-a579c77319f9')
    },
    idIndex: { v: 2, key: { _id: 1 }, name: '_id_' },
    sharded: false,
    shards: [ null ]
  }
]

            Assignee:
            silvia.surroca@mongodb.com Silvia Surroca
            Reporter:
            silvia.surroca@mongodb.com Silvia Surroca
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              Created:
              Updated:
              Resolved:
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