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  1. Core Server
  2. SERVER-5047

Better chunk selection when balancing

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: Backlog
    • Component/s: Sharding
    • Labels:
      None

      Description

      The balancer will always move the lowest chunk on the shard, unless the highest chunk matches the lowest chunk on another shard. Without any more information about data growth, this should probably be random or a smarter choice that minimizes fragmentation.

        Attachments

        1. balance.pl
          4 kB
        2. balancer.patch
          2 kB

          Issue Links

          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-30653 Randomize Chunk Locations with chunkLocationRandomizer

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          New Feature - A new feature of the product, which has yet to be developed. SERVER-9114 Add balancer strategy that balances based on working set estimation

          • Major - P3 - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-9120 Load based balancing

          • Major - P3 - Major loss of function.
          • Open

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                Dates

                Created:
                Updated: