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  1. Core Server
  2. SERVER-29342

CollectionShardingState to support oplog event StartRangeDeletion

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.5.9
    • Sharding
    • None
    • Fully Compatible
    • Sharding 2017-05-29, Sharding 2017-06-19
    • 0

    Description

      Support for Safe Secondary Reads requires assistance from CollectionShardingState subsystem, including MetadataManager and CollectionRangeDeleter.

      Specifically:

      • ScopedCollectionMetadata::operator==, !=
      • CollectionShardingState::overlappingMetadata(ChunkRange)
        -> std::vector<ScopedCollectionMetadata>
      • CollectionRangeDeleter to write a document StartRangeDeletion to collection admin.system.version containing

          { _id: 'startRangeDeletion', ns:<collection>, epoch:<epoch>, min:<low>, max:<high> }
          

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              nathan.myers Nathan Myers
              nathan.myers Nathan Myers
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                Created:
                Updated:
                Resolved: