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  1. Documentation
  2. DOCS-2757

Mistake on the Chunks page

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: v1.3.1
    • Component/s: None
    • Labels:
      None
    • Last comment by Customer:
      true
    • Actual Time:
      4

      Description

      http://docs.mongodb.org/manual/core/sharding-chunk-splitting/

      This page states: "When a chunk grows beyond the specified chunk size, a mongos instance will split the chunk in half."

      This is not always strictly true. The mongo s will try to split it in half, but supposing you've chosen a shard key with insufficient cardinality, and all data on the chunk has the same shard value, it will never split even though it outgrows 64MB.

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            Assignee:
            sam.kleinman Sam Kleinman (Inactive)
            Reporter:
            william.cross William Cross
            Participants:
            Last commenter:
            Jonathan Dahl Jonathan Dahl
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              Dates

              Created:
              Updated:
              Resolved:
              Days since reply:
              7 years, 17 weeks ago
              Date of 1st Reply: