Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-26770

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

    XMLWordPrintableJSON

Details

    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major - P3 Major - P3
    • 3.4.0-rc2
    • 3.4.0-rc1
    • Sharding
    • None
    • Fully Compatible
    • ALL
    • Sharding 2016-10-31

    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.

      Attachments

        Activity

          People

            kaloian.manassiev@mongodb.com Kaloian Manassiev
            kaloian.manassiev@mongodb.com Kaloian Manassiev
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: