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Posted to issues@nifi.apache.org by "David Handermann (Jira)" <ji...@apache.org> on 2021/12/13 23:08:00 UTC

[jira] [Created] (NIFI-9483) Evaluate Addition of log4j-slf4j-impl

David Handermann created NIFI-9483:
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             Summary: Evaluate Addition of log4j-slf4j-impl
                 Key: NIFI-9483
                 URL: https://issues.apache.org/jira/browse/NIFI-9483
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Extensions
            Reporter: David Handermann
            Assignee: David Handermann


Several extension components include transitive dependencies on Log4j 2. NiFi uses the SLF4J API for logging in application code, and Logback as the runtime implementation. 

The Log4j 2 system supports SLF4J for runtime message routing, which would ensure that all log messages route through SLF4J and Logback, as opposed to falling back to the default Log4j 2 appender.  Current extension components should be evaluated to determine whether an explicit dependency on log4j-slf4j-impl is necessary to ensure proper runtime log handling for libraries that rely on the Log4j 2 API.



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