Can create indexes on non-insertable fields (i.e. beginning with '$')

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    • Type: Bug
    • Resolution: Done
    • Priority: Minor - P4
    • 2.5.4
    • Affects Version/s: None
    • Component/s: Index Maintenance
    • Minor Change
    • ALL
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      > coll.ensureIndex({'x.$a':1})
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      > coll.ensureIndex({ 'x.$a' :1})
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      Can create indices, for example:

      > coll.ensureIndex({'x.$a':1})
> coll.getIndexes()
[
	{
		"v" : 1,
		"name" : "_id_",
		"ns" : "test.t",
		"key" : {
			"_id" : 1
		}
	},
	{
		"v" : 1,
		"ns" : "test.t",
		"key" : {
			"x.$a" : 1
		},
		"name" : "x.$a_1"
	}
]

      You can also create an index that contains an empty field name, i.e.: "x..a"

      As you cannot save/insert/upsert a field with that name, it seems like incorrect behavior to be able to index on it.

            Assignee:
            Amalia Hawkins (Inactive)
            Reporter:
            Amalia Hawkins (Inactive)
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              Created:
              Updated:
              Resolved: