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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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None
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Affects Version/s: 3.4.1
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Component/s: Index Maintenance, TTL
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None
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ALL
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As per the documentation for 3.4, if a non-TTL single-field index already exists for a field, you cannot create a TTL index on the same field since you cannot create indexes that have the same key specification and differ only by the options. To change a non-TTL single-field index to a TTL index, you must drop the index first and recreate with the expireAfterSeconds option.
{ "v" : 2, "key" : { "date" : 1 }, "name" : "date_1", "ns" : "training.toys" }, { "v" : 2, "key" : { "date" : 1, "expireAfterSeconds" : 3900 }, "name" : "date_1_expireAfterSeconds_3900", "ns" : "training.toys" }