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  1. Core Server
  2. SERVER-18170

_id index should not be allowed to have partial filter or be sparse

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Minor - P4 Minor - P4
    • 3.1.3
    • Affects Version/s: 3.1.1
    • Component/s: Index Maintenance
    • Minor Change
    • ALL
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          coll=db.id_partial;
    coll.drop();
    db.createCollection("id_partial", {autoIndexId: false});
    coll.ensureIndex({_id: 1}, {filter: {a: 1}});
    coll.insert({a:2});
    printjson(coll.getIndexSpecs());
    printjson(coll.validate.keysPerIndex);
      Show
      coll=db.id_partial; coll.drop(); db.createCollection( "id_partial" , {autoIndexId: false }); coll.ensureIndex({_id: 1}, {filter: {a: 1}}); coll.insert({a:2}); printjson(coll.getIndexSpecs()); printjson(coll.validate.keysPerIndex);
    • Quint Iteration 3

      If you create a collection without the _id index, you can create a partial index on _id.

            Assignee:
            rassi J Rassi
            Reporter:
            michael.grundy Michael Grundy
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              Created:
              Updated:
              Resolved: