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  1. Core Server
  2. SERVER-46001

Move checkShardingIndex outside shardCollection's read critical section on the primary shard

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 4.0.3, 4.2.0
    • 4.2.4, 4.0.17
    • Sharding
    • None
    • Fully Compatible
    • v4.0
    • Sharding 2020-03-09

    Description

      The shardCollection implementation on the primary shard contains at least one task, which performs collection scan while under the critical section, namely checkShardingIndex. This can cause a significant period of unavailability for a large collection.

      This ticket is to inspect all the work which is performed under the critical section of shardCollection and ensure that it is held for the minimum time possible.

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              cheahuychou.mao@mongodb.com Cheahuychou Mao
              ritesh.saigal@mongodb.com Ritesh Saigal
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                Created:
                Updated:
                Resolved: