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  1. Core Server
  2. SERVER-38975

Single-collection high water marks omit UUID on shards where the collection does not exist

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 4.1 Desired
    • Fix Version/s: 4.0.7, 4.1.8
    • Component/s: Aggregation Framework
    • Labels:
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      Description

      For single-collection change streams, high water mark tokens received from shards on which the collection does not exist will always omit the UUID. While these tokens function perfectly well for merging purposes, PBRTs returned to the client without the appropriate UUID cannot be used to resume the stream, since we cannot accurately determine the collection's default collation.

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