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List:       apache-announce
Subject:    [ANNOUNCE] Apache Log4j 2.20.0 released
From:       Ralph Goers <rgoers () apache ! org>
Date:       2023-02-22 5:52:08
Message-ID: 9CCBFA07-A54E-4DAA-8757-D36403274821 () apache ! org
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The Apache Log4j 2 team is pleased to announce the Log4j 2.20.0 release!

Apache Log4j is a well known framework for logging application behavior. Log4j 2 is \
an upgrade to Log4j that provides significant improvements over its predecessor, \
Log4j 1.x, and provides many other modern features such as support for Markers, \
lambda expressions for lazy logging, property substitution using Lookups, multiple \
patterns on a PatternLayout and asynchronous Loggers. Another notable Log4j 2 feature \
is the ability to be "garbage-free" (avoid allocating temporary objects) while \
logging. In addition, Log4j 2 will not lose events while reconfiguring.

The artifacts may be downloaded from \
https://logging.apache.org/log4j/2.x/download.html.

This release primarily contains bug fixes and minor enhancements.

Due to a break in compatibility in the SLF4J binding, Log4j now ships with two \
versions of the SLF4J to Log4j adapters. log4j-slf4j-impl should be used with SLF4J \
1.7.x and earlier and log4j-slf4j2-impl should be used with SLF4J 2.x and later. \
SLF4J-1.8.x is no longer supported as there were never any GA versions of that. Note \
that while log4j-slf4j-impl has a dependency on slf4j 1.7.25 in order to not break \
compatibility for users, newer versions of SLF4J 1.7 may be used instead.

The Log4j 2.20.0 API, as well as many core components, maintains binary compatibility \
with previous releases.

Apache Log4j 2.20.0 requires a minimum of Java 8 to build and run. Log4j 2.12.4 is \
the last release to support Java 7. Log4j 2.3.2 is the last release to support Java \
6. Java 6 and Java 7 are no longer supported by the Log4j team.

For complete information on Apache Log4j 2, including instructions on how to submit \
bug reports, patches, or suggestions for improvement, see the Apache Log4j 2 website \
- https://logging.apache.org/log4j/2.x/.

Changes

Added
• Add support for timezones in RollingFileAppender date pattern (for LOG4J2-1631 by \
Piotr P. Karwasz, Danas Mikelinskas) • Add LogEvent timestamp to ProducerRecord in \
KafkaAppender (for LOG4J2-2678 by Piotr P. Karwasz, Federico D'Ambrosio) • Add \
PatternLayout support for abbreviating the name of all logger components except the 2 \
rightmost (for LOG4J2-2785 by Ralph Goers, Markus Spann) • Removes internal field \
that leaked into public API. (for LOG4J2-3615 by Piotr P. Karwasz) • Add a \
LogBuilder#logAndGet() method to emulate the Logger#traceEntry method. (for \
LOG4J2-3645 by Piotr P. Karwasz)

Changed
• Simplify site generation (for 1166 by Volkan Yazıcı
• Switch the issue tracker from JIRA to GitHub Issues (for 1172 by Volkan Yazıcı)
• Remove liquibase-log4j2 maven module (for 1193 by StevenMassaro)
• Fix order of stacktrace elements, that causes cache misses in \
ThrowableProxyHelper. (for 1214 by alex-dubrouski, Piotr P. Karwasz) • Switch from \
com.sun.mail to Eclipse Angus. (for LOG4J2-3554 by Oleh Astappiev, Piotr P. Karwasz) \
• Add Log4j2 Core as default runtime dependency of the SLF4J2-to-Log4j2 API bridge. \
(for LOG4J2-3601 by afs, Piotr P. Karwasz) • Replace maven-changes-plugin with a \
custom changelog implementation (for LOG4J2-3628 by Volkan Yazıcı)

Deprecated
• Deprecate support for package scanning for plugins (for LOG4J2-3644 by Ralph \
Goers)

Fixed
• Copy programmatically supplied location even if includeLocation="false". (for \
1197 by Piotr P. Karwasz) • Eliminate status logger warning, when disableAnsi or \
noConsoleNoAnsi is used the style and highlight patterns. (for 1202 by wleese, Piotr \
P. Karwasz) • Fix detection of location requirements in RewriteAppender. (for 1274 \
by amirhadadi, Piotr P. Karwasz) • Replace regex with manual code to escape \
characters in Rfc5424Layout. (for 1277 by adwsingh) • Fix java.sql.Time object \
formatting in MapMessage (for LOG4J2-2297 by Ralph Goers) • Fix previous fire time \
computation in CronTriggeringPolicy (for LOG4J2-3357 by Ralph Goers) • Correct \
default to not include location for AsyncRootLoggers (for LOG4J2-3487 by Ralph Goers, \
Dave Messink) • Lazily evaluate the level of a SLF4J LogEventBuilder (for \
LOG4J2-3598 by Piotr P. Karwasz) • Fixes priority of Legacy system properties, \
which are now back to having higher priority than Environment variables. (for \
LOG4J2-3615 by adwsingh, Piotr P. Karwasz) • Protects ServiceLoaderUtil from \
unchecked ServiceLoader exceptions. (for LOG4J2-3624 by Piotr P. Karwasz) • Fix \
Configurator#setLevel for internal classes (for LOG4J2-3631 by Piotr P. Karwasz, Jeff \
Thomas) • Fix level propagation in Log4jBridgeHandler (for LOG4J2-3634 by Piotr P. \
Karwasz, Marcel Koch) • Disable OsgiServiceLocator if not running in OSGI \
container. (for LOG4J2-3642 by adwsingh, Piotr P. Karwasz) • When using a Date \
Lookup in the file pattern the current time should be used. (for LOG4J2-3643 by Ralph \
Goers) • Fixed LogBuilder filtering in the presence of global filters. (for \
LOG4J2-3647 by Piotr P. Karwasz)=


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