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  1. Core Server
  2. SERVER-77034

Mongodb 4.4 doesn't support $search field names

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Major - P3 Major - P3
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      1. Mongodb 4.4
      2. 

      db.setProfilingLevel(0, { filter: { $or: [ { millis: { $gte: 1 } }, { $and: [ { $sampleRate: 1 }, { "command.pipeline.0.$search.tracking.searchTerms": { $exists: true } }] }] } });

      Note: 

       db.setProfilingLevel(0, { filter: { $or: [ { millis: { $gte: 1 } }, { $and: [ { $sampleRate: 1 }, { "command.pipeline.0.tracking.searchTerms": { $exists: true } }] }] } });

      without the $search term works fine

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      1. Mongodb 4.4 2. db.setProfilingLevel( 0 , { filter: { $or: [ { millis: { $gte: 1 } }, { $and: [ { $sampleRate: 1 }, { "command.pipeline.0.$search.tracking.searchTerms" : { $exists: true } }] }] } }); Note: db.setProfilingLevel( 0 , { filter: { $or: [ { millis: { $gte: 1 } }, { $and: [ { $sampleRate: 1 }, { "command.pipeline.0.tracking.searchTerms" : { $exists: true } }] }] } }); without the $search term works fine

    Description

      I’m on the intel team and we ran into an issue where mongodb 4.4 doesn’t support FieldPath field names that start with ‘$’.

      This is an issue because the filter expression we use to power our Search Query telemetry project uses the $search stage to emit search queries
      (we’re using this filter expression command: 

      db.setProfilingLevel(0, { filter: { $or: [ { millis: { $gte: 1 } }, { $and: [ { $sampleRate: 1 }, { "command.pipeline.0.$search.tracking.searchTerms": { $exists: true } }] }] } });

      )

      This $ field name support isn’t an issue with 5.0+ mongodb versions, and we can run the above command without issue

      Initial investigations point me to believe it may just be a MatchExpression parsing issue

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            backlog-query-integration Backlog - Query Integration
            alex.franzen@mongodb.com Alex Franzen
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              Created:
              Updated: