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  1. Core Server
  2. SERVER-44884

Remove the 'useNewUpsert' flag after branching for 4.5

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    • Fully Compatible
    • Query 2020-03-23

    Description

      As part of SERVER-43860, a new useNewUpsert flag was added to the aggregate command to facilitate smooth upgrade/downgrade, since certain 4.2 versions supported this behaviour and others did not. When we branch for 4.5, this flag will no longer be necessary and should be removed. AggregationRequest will continue to ingest it for upgrade purposes, but should simply swallow it.

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            bernard.gorman@mongodb.com Bernard Gorman
            bernard.gorman@mongodb.com Bernard Gorman
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