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  1. Documentation
  2. DOCS-3374

Roling index build on cluster: the balancer might propagate an index sooner than expected

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    • Icon: Improvement Improvement
    • Resolution: Duplicate
    • Icon: Major - P3 Major - P3
    • 01112017-cleanup
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    Description

      RE:
      http://docs.mongodb.org/manual/tutorial/build-indexes-on-replica-sets/#procedure

      We should add a warning or suggestion to disable the balancer during a rolling index creation on a sharded cluster. If you apply an index build to a couple of nodes (of a couple of shards at a time) from a large cluster you can have an index build propagated incidentally by the balancer (chunk move ensures indexes at the destination). This would create an index in the foreground on a primary.

      The incidental propagation of indexes by the balancer has the potential to cause an outage during a rolling index build procedure.

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            Unassigned Unassigned
            andrew.ryder@mongodb.com Andrew Ryder (Inactive)
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            Dates

              Created:
              Updated:
              Resolved:
              9 years, 40 weeks, 6 days ago