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  1. Core Server
  2. SERVER-31430

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

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Details

    • Bug
    • Status: Closed
    • Minor - P4
    • Resolution: Duplicate
    • 3.4.9
    • None
    • None
    • None
    • Minor Change
    • ALL

    Description

      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?

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              Unassigned Unassigned
              brad@mixmax.com Brad Vogel
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