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  1. Documentation
  2. DOCS-1266

_secondaryThrottle true on balancer in 2.4 ?

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    Description

      In 2.4, _secondaryThrottle option has been turned to true by default for the moveChunk command. Has the setting been turned on to true on the balancer as well ?

      Release notes say : "By default, all insert and delete operations that occur as part of a chunk migration in a sharded cluster will have an increased write concern, to ensure that at least one secondary acknowledges each insert and deletion operation. This change slows the potential speed of a chunk migration, but increases reliability and ensures that a large number of chunk migrations cannot affect the availability of a sharded cluster."
      which makes me believe that it has

      http://docs.mongodb.org/manual/reference/command/moveChunk/#moveChunk
      explicitly says that it has been turned on be default

      The balancer portion (all the way at the bottom) here doesnt say anything:
      http://docs.mongodb.org/manual/tutorial/configure-sharded-cluster-balancer/#require-replication-before-chunk-migration-secondary-throttle

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            sam.kleinman Sam Kleinman (Inactive)
            siddharth.singh@10gen.com siddharth.singh@10gen.com
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              Created:
              Updated:
              Resolved:
              10 years, 43 weeks, 6 days ago