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  1. Core Server
  2. SERVER-57079

Regex with "u" option fails on 5.0.0-alpha0

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Duplicate
    • None
    • None
    • None
    • ALL
    • v5.0
    • Hide
      • Connect to a RS running version of MongoDB mentioned above using PyMongo 3.11.4 

                from pymongo import MongoClient
        		 
                client = MongoClient(directConnection=False)

      • Insert the following document: 

                client.db.test.insert_one({"x": "hello_test"})

      • Run the following find operation: 

                import re
        		 
                client.db.test.find({"x": re.compile("^hello.*")}))), 4)

      Show
      Connect to a RS running version of MongoDB mentioned above using PyMongo 3.11.4 from pymongo import MongoClient client = MongoClient(directConnection = False ) Insert the following document: client.db.test.insert_one({ "x" : "hello_test" }) Run the following find operation: import re client.db.test.find({ "x" : re. compile ( "^hello.*" )}))), 4 )
    • Query Execution 2021-06-14, Query Execution 2021-06-28, Query Execution 2021-07-12

    Description

      This regression will break all users of PyMongo who are using Python 3 as Python 3 uses the u option by default.

      This regression was discovered when a PyMongo test started failing with the error:

      pymongo.errors.OperationFailure:  invalid flag in regex options: u, full error: {'ok': 0.0, 'errmsg': ' invalid flag in regex options: u', 'code': 51108, 'codeName': 'Location51108', '$clusterTime': {'clusterTime': Timestamp(1621462192, 5), 'signature': {'hash': b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'keyId': 0}}, 'operationTime': Timestamp(1621462192, 5)}

      Server version:

      db version v5.0.0-alpha0-475-g96d00d9
      		 
      Build Info: {
      		 
          "version": "5.0.0-alpha0-475-g96d00d9",
      		 
          "gitVersion": "96d00d92d71ed9ddc0ac4eb3f60b0b27cb9dcb34",
      		 
          "modules": [
      		 
              "enterprise"
      		 
          ],
      		 
          "allocator": "system",
      		 
          "environment": {
      		 
              "distarch": "x86_64",
      		 
              "target_arch": "x86_64"
      		 
          }
      		 
      }

      While the $regex operator documentation does not list u as a supported option, this was working until now.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-26991 Inconsistent handling of RegEx options

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              mickey.winters@mongodb.com Mickey Winters
              prashant.mital Prashant Mital (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: