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  1. Core Server
  2. SERVER-37786

Reject change streams which modify or project-out the resume token

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    • Type: Icon: Improvement Improvement
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 4.1.8
    • Affects Version/s: None
    • Component/s: Aggregation Framework
    • None
    • Minor Change
    • v4.0
    • Query 2018-12-17, Query 2018-12-31, Query 2019-01-14, Query 2019-01-28, Query 2019-02-11

      For example, this pipeline:

      db.x.watch([{$replaceRoot: {newRoot: "$fullDocument"}}])

      Such a pipeline is incompatible with the drivers protocol, and will fail to resume in the face of a network outage. It is not intended to be supported, so we should ban it to provide a more predictable failure scenario. Now that we have completed SERVER-35904, it shouldn't be very difficult to verify the _id is preserved by the pipeline.

            Assignee:
            bernard.gorman@mongodb.com Bernard Gorman
            Reporter:
            charlie.swanson@mongodb.com Charlie Swanson
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              Created:
              Updated:
              Resolved: