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https://issues.apache.org/jira/browse/NIFI-9483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Handermann updated NIFI-9483:
-----------------------------------
Description:
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-to-slf4j is necessary to ensure proper runtime log handling for libraries
that rely on the Log4j 2 API.
was:
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.
> Evaluate Addition of log4j-to-slf4j
> -----------------------------------
>
> 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
> Priority: Minor
>
> 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-to-slf4j is necessary to ensure proper runtime log handling for
> libraries that rely on the Log4j 2 API.
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