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  1. Core Server
  2. SERVER-17599

dropDups ignored on index creation

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Works as Designed
    • 3.0.0
    • None
    • Index Maintenance
    • None
    • Major Change
    • ALL
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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 }

    Description

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

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-17628 Unique Index Creation Fails Despite `dropDups`

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Task - A task that needs to be done. SERVER-14710 Remove dropDups support from index building

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Task - A task that needs to be done. DOCS-5012 3.0 docs still refer to dropDups option

          • Major - P3 - Major loss of function.
          • Closed

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              Unassigned Unassigned
              neillunn Neil Lunn
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              Dates

                Created:
                Updated:
                Resolved: