[ANNOUNCEMENT] Log4j 2.14.0 released

The Apache Log4j 2 team is pleased to announce the Log4j 2.14.0 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 contains a new Layout, JsonTemplateLayout, that is intended =
to ultimately replace JsonLayout. As its name suggests it uses a =
template to define the elements to include in the JSON. This Layout was =
contributed by the author of the log4j2-logstash-layout at GitHub, and =
who is now a member of the Log4j community.

Log4j 2.14.0 adds support for MongoDB 4 and removes support for MongoDB =
2.

This release also contains a number of bug fixes which are listed below.

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-slf4j18-impl =
should be used with SLF4J 1.8.x and later.

The Log4j 2.14.0 API, as well as many core components, maintains binary =
compatibility with previous releases.

GA Release 2.14.0

Changes in this version include:

New Features

	=E2=80=A2 LOG4J2-2957: Add JsonTemplateLayout.
	=E2=80=A2 LOG4J2-2848: Create module log4j-mongodb4 to use new =
major version 4 MongoDB driver.
	=E2=80=A2 LOG4J2-2858: More flexible configuration of the =
Disruptor WaitStrategy. Thanks to Stepan Gorban.
Fixed Bugs

	=E2=80=A2 LOG4J2-2925: Fix broken link in FAQ.
	=E2=80=A2 LOG4J2-2911: Log4j2EventListener in =
spring.cloud.config.client listens for wrong event.
	=E2=80=A2 LOG4J2-2919: Call ReliabilityStrategy's =
beforeStopAppenders() method before stopping AsyncAppender. Thanks to =
Geng Yuanzhe.
	=E2=80=A2 LOG4J2-2906: Fix UnsupportedOperationException when =
initializing the Log4j2CloudConfigLoggingSystem. Thanks to Stephen =
Joyner.
	=E2=80=A2 LOG4J2-2908: Move Spring Lookup and Spring =
PropertySource to its own module.
	=E2=80=A2 LOG4J2-2910: Log4j-web should now stores the servlet =
context as a map entry instead of in the single external context field.
	=E2=80=A2 LOG4J2-2822: Javadoc link in ThreadContext description =
was incorrect.
	=E2=80=A2 LOG4J2-2894: Fix spelling error in log message.
	=E2=80=A2 LOG4J2-2901: Missing configuration files should be =
ignored when creating a composite configuration.
	=E2=80=A2 LOG4J2-2883: When using DirectFileRolloverStrategy the =
file pattern was not being recalculated on size based rollover after a =
time based rollover had occurred.
	=E2=80=A2 LOG4J2-2875: Rollover was failing to create =
directories when using a DirectFileeRolloverStrategy.
	=E2=80=A2 LOG4J2-2859: Fixed typos where mergeFactory should be =
mergeStrategy. Thanks to Yanming Zhou.
	=E2=80=A2 LOG4J2-2832: Correct class name printed in error =
message in RollingFileAppender. Thanks to Benjamin Asbach.
	=E2=80=A2 LOG4J2-2882: Support java.util.logging filters when =
using that API. Thanks to Emmanuel Bourg.
	=E2=80=A2 LOG4J2-2880: Create StackWalker benchmark. Revert back =
to StackWalker.walk based on benchmark results.
	=E2=80=A2 LOG4J2-2867: Obtain ContextDataProviders =
asynchronously.
	=E2=80=A2 LOG4J2-2877: Determine the container id to obtain =
container and image information.
	=E2=80=A2 LOG4J2-2844: Null pointer exception when no network =
interfaces are available.
	=E2=80=A2 LOG4J2-2895: Fix potential deadlock in asynchronous =
logging by avoiding blocking for queue space on Log4jThreads
	=E2=80=A2 LOG4J2-2837: Disruptor and JUL no longer recursively =
start the AsyncLoggerDisruptor resulting in an extra disruptor =
background thread constantly waiting.
	=E2=80=A2 LOG4J2-2867: RingBufferLogEventTranslator uses a =
static ContextDataInjector instead of initializing a new object on each =
thread.
	=E2=80=A2 LOG4J2-2898: Avoid initializing volatile fields with =
default values. Thanks to Turbanov Andrey.
	=E2=80=A2 LOG4J2-2899: Fix log4j-1.2-api LogEventWrapper =
threadId and priority accessors when called multiple times.
	=E2=80=A2 LOG4J2-2939: Fix NPE in MDCContextMap on 'contains' =
and 'isEmpty' invocations. Thanks to Constantin Hirsch.
	=E2=80=A2 LOG4J2-2954: Prevent premature garbage collection of =
shutdown hooks in DefaultShutdownCallbackRegistry. Thanks to Henry Tung.
Changes

	=E2=80=A2 LOG4J2-2889: Add date pattern support for HTML layout. =
Thanks to Geng Yuanzhe.
	=E2=80=A2 LOG4J2-2892: Allow GelfLayout to produce newline =
delimited events. Thanks to Jakub Lukes.
	=E2=80=A2 : Update MongoDB tests to require Java 8 =
unconditionally now that Log4j requires Java 8.
	=E2=80=A2 : Update mongodb3.version from 3.12.1 to 3.12.6.
	=E2=80=A2 : Update com.fasterxml.jackson.* 2.10.2 -> 2.11.0.
	=E2=80=A2 : Update org.apache.activemq:activemq-broker 5.15.11 =
-> 5.16.0.
	=E2=80=A2 : Update org.apache.commons:commons-compress 1.19 -> =
1.20.
	=E2=80=A2 : Update org.apache.commons:commons-csv 1.7 -> 1.8.
	=E2=80=A2 : Update org.apache.commons:commons-lang3 3.9 -> 3.10.
	=E2=80=A2 : Update org.codehaus.groovy:* 2.5.6 -> 3.0.5.
	=E2=80=A2 : Update tests junit:junit 4.12 -> 4.13.
	=E2=80=A2 : Update tests commons-io:commons-io 2.6 -> 2.7.
	=E2=80=A2 : Update jackson 2.11.0 -> 2.11.2.
	=E2=80=A2 : Update tests hsqldb 2.5.0 -> 2.5.1.
Removed

	=E2=80=A2 LOG4J2-2851: Drop log4j-mongodb2 module.
Apache Log4j 2.14.0 requires a minimum of Java 8 to build and run. Log4j =
2.12.1 is the last release to support Java 7.

For complete information on Apache Log4j 2, including instructions on =
how to submit bug reports, patches, or suggestions for improvement, see =
the Apache Apache Log4j 2 website:

https://logging.apache.org/log4j/2.x/=