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  1. Core Server
  2. SERVER-17599

dropDups ignored on index creation

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 3.0.0
    • Component/s: Index Maintenance
    • Labels:
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    • Major Change
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      Create duplicate data:

          db.test.insert({ "a": 1 })
    db.test.insert({ "a": 1 })

      Try to create the index:

          db.test.ensureIndex({ "a": 1 },{ "unique": true, "dropDups": true })

      Index build fails with message:

          {
        "createdCollectionAutomatically" : false,
        "numIndexesBefore" : 1,
        "errmsg" : "exception: E11000 duplicate key error dup key: { : 1.0 }",
        "code" : 11000,
        "ok" : 0
    }
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      Create duplicate data: db.test.insert({ "a" : 1 }) db.test.insert({ "a" : 1 }) Try to create the index: db.test.ensureIndex({ "a" : 1 },{ "unique" : true , "dropDups" : true }) Index build fails with message: { "createdCollectionAutomatically" : false , "numIndexesBefore" : 1, "errmsg" : "exception: E11000 duplicate key error dup key: { : 1.0 }" , "code" : 11000, "ok" : 0 }

      The dropDups option is being ignored and indexing fails when a key with a unique constraint contains duplicates

            Assignee:
            Unassigned Unassigned
            Reporter:
            neillunn Neil Lunn
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              Created:
              Updated:
              Resolved: