`background:true` is more sensible default for `createIndex()`

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    • Type: Bug
    • Resolution: Duplicate
    • Priority: Minor - P4
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    • Affects Version/s: 3.4.9
    • Component/s: None
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    • Minor Change
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      Per https://docs.mongodb.com/manual/reference/method/db.collection.createIndex/#options-for-all-index-types, the `background` option defaults to `false`. This has caused operational problems on our team using MongoDB. We've forgotten `background:true` and it's blocked all database calls, causing downtime (until we could run `db.killOp()`).

      Wouldn't `background: true` be a more sensible default? I can't think of a reason we'd ever use the default that blocks all database operations. Is there a historical reason this isn't the default?

              Assignee:
              Unassigned
              Reporter:
              Brad Vogel
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                Created:
                Updated:
                Resolved: