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  1. Core Server
  2. SERVER-26770

Sharding balancer moves chunks from shards whose utilization is below the cluster average

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 3.4.0-rc1
    • Fix Version/s: 3.4.0-rc2
    • Component/s: Sharding
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Epic Link:
    • Sprint:
      Sharding 2016-10-31
    • Case:

      Description

      The sharding balancer does not consult the optimal per shard chunk count when deciding to move chunks out of a shard and because of this causes chunks to move from shards with below-average number of entries to even less loaded shards, thus causing unnecessary churn.

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          related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-25652 Slow chunk migrations when there are large chunk counts. 3.0, 3.2, 3.3.11

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

            Activity

              People

              Assignee:
              kaloian.manassiev Kaloian Manassiev
              Reporter:
              kaloian.manassiev Kaloian Manassiev
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                Dates

                Created:
                Updated:
                Resolved: