Major - P3 Description
Starting with MongoDB 5.0.4, db.serverStatus() adds counters for match operators.
The entry for 'metrics.operatorCounters.match' looks like:
"match": {
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"$all": 0,
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...
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"$or": 4249,
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"$regex": 21,
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"$sampleRate": 0,
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"$size": 0,
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"$text": 0,
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"$type": 7,
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"$where": 0
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}
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The problem is with the "$regex" field that is rejected by the BSON library.
Here is short program showing the failure.
#!python
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# works
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regex_str_doc = """
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{
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"$regex": "10"
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}
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"""
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# fails
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regex_int_doc = """
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{
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"$regex": 10
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}
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"""
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import bson.json_util
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import pymongo
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o = bson.json_util.loads(regex_str_doc) # works
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#o = bson.json_util.loads(regex_int_doc) # fails
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