Setting log level for com.mongodb.internal.diagnostics.logging.SLF4JLogger doesn't work

gist.md

Problem

Running with Spring Boot, I get logs like this

c.m.i.d.l.SLF4JLogger : Command "insert" started on database "test" using a connection with driver-generated ID 3 and server-generated ID 13 to localhost:32795. The request ID is 13 and the operation ID is 11. Command: {"insert": "jobExecution", "ordered": true, "txnNumber": 1, "$db": "test", "$clusterTime": {"clusterTime": {"$timestamp": ...}

where c.m.i.d.l.SLF4JLogger refers to com.mongodb.internal.diagnostics.logging.SLF4JLogger.

I want to disable this logging, but if I change log4j2.xml to add:

    <Logger level="INFO" name="com.mongodb.internal.diagnostics.logging"/>

it still shows, and the same applies if I set log levels via application-test.yml (for integration tests) as follows:

debug: false
logging:
  level:
    com.mongodb.internal.diagnostics.logging: INFO # Doesn't work
    org.springframework.data.mongodb.core: INFO    # Works

Solution

It turns out that there is some magic going on where the logger name logged, is not the same as what is used to enable or disable it.

debug: false
logging:
  level:
    org.mongodb: INFO # Works (what...!)