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  1. Core Server
  2. SERVER-24815

Merging aggregation pipeline strategy should be configurable

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    • Query Optimization

    Description

      SERVER-18925 added the distribution of merge stage of aggregation to any random shard rather than overloading primary shard for the database.

      On a very large cluster this can max out the number of connections when every shard can be sending data to every shard and therefore it's desirable to add ability to stick to primary shard or be able to limit the shards that can be delegated with this ability.

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              backlog-query-optimization Backlog - Query Optimization
              asya.kamsky@mongodb.com Asya Kamsky
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                Updated: