[jira] [Created] (LOG4J2-3612) Root LoggerConfig default for additivity changed in 2.17.2

["Davis Walsh (Jira)" <ji...@apache.org>]

Davis Walsh created LOG4J2-3612:
-----------------------------------

             Summary: Root LoggerConfig default for additivity changed in 2.17.2
                 Key: LOG4J2-3612
                 URL: https://issues.apache.org/jira/browse/LOG4J2-3612
             Project: Log4j 2
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.17.2, 2.18.0
            Reporter: Davis Walsh
             Fix For: 2.17.3, 2.18.1


Before 2.17.2 the default additivity for LoggerConfig was [true|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-core/src/main/java/org/apache/logging/log4j/core/config/LoggerConfig.java#L747], but is now [false|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-core/src/main/java/org/apache/logging/log4j/core/config/LoggerConfig.java#L122]. I think this change was included in [this LOG4J2-3341 commit|https://github.com/apache/logging-log4j2/commit/5a459dda1e731dfa93198db63493c1cb1cd1e941#diff-461d467ccfa2fc222a0481d1c318f1f12e57dd60fb17ef2411c66f133f37fadf]

 

This has the effect of setting the root LoggerConfig's additivity to false. While this may not have any impact on the root loggers functionality, it does have an impact when new Loggers create created that were previously defaulting to the root config. For example, when adding an Appender to such a logger, the root config is used as the basis for the new LoggerConfig, [including this affinity|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-core/src/main/java/org/apache/logging/log4j/core/config/AbstractConfiguration.java#L880]. This means that a Logger that previously logged to the root logger's appenders will now only log to the newly added Appender.

 

I've been able to work around this by setting the level on the logger before adding a new appender, which [hardcodes additivity to true in the new LoggerConfig|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-core/src/main/java/org/apache/logging/log4j/core/config/Configurator.java#L422]. This seems fragile, especially [given the TODO statement in the code|https://github.com/apache/logging-log4j2/blob/release-2.x/log4j-core/src/main/java/org/apache/logging/log4j/core/config/Configurator.java#L421].



--
This message was sent by Atlassian Jira
(v8.20.10#820010)