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From Ralph Goers <ralph.go...@dslextreme.com>
Subject Re: [ANNOUNCE] Apache Log4j 2.11.0 released
Date Sat, 17 Mar 2018 00:43:31 GMT
Please ignore the email below. It contains incorrect text regarding the release.

Ralph

> On Mar 16, 2018, at 5:39 PM, Ralph Goers <ralph.goers@dslextreme.com> wrote:
> 
> The Apache Log4j 2 team is pleased to announce the Log4j 2.10.0 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.
> 
> This release contains new features, bugfixes and minor enhancements. Some of the new
features include support for the Java 9 module system, support for the new SLF4j 1.8 binding
mechanism, simplification of the Log4j property naming scheme, and native support of Jetty's
logger. Log4j API is now a fully compliant module while the other Log4j jars are named automatic
modules.
> 
> As of Log4j 2.9.0, the Log4j API was modified to use java.util.ServiceLoader to locate
Log4j implementations, although the former binding mechanism is still supported. The Log4j
API jar is now a multi-release jar to provide implementations of Java 9 specific classes.
Multi-release jars are not supported by the OSGi specification so OSGi modules will not be
able to take advantage of these implementations but will not lose functionality as they will
fall back to the implementations used in Java 7 and 8. More details on the new features and
fixes are itemized below. Note that some tools are not compatible with multi-release jars
and may fail trying to process class files in the META-INF/versions/9 folder. Those errors
should be reported to the tool vendor.
> 
> Note that subsequent to the 2.9.0 release, for security reasons, SerializedLayout is
deprecated and no longer used as default in the Socket and JMS appenders. SerializedLayout
can still be used as before, but has to be specified explicitly. To retain old behaviour,
you have to change configuration like:
> 
> <Appenders>
>  <Socket name="socket" host="localhost" port="9500"/>
> </Appenders>
> 
> into:
> 
> <Appenders>
>  <Socket name="socket" host="localhost" port="9500">
>    <SerializedLayout/>
>  </Socket>
> </Appenders>
> 
> We do, however, discourage the use of SerializedLayout and recommend JsonLayout as a
replacement:
> 
> <Appenders>
>  <Socket name="socket" host="localhost" port="9500">
>    <JsonLayout properties="true"/>
>  </Socket>
> </Appenders>
> 
> Note that subsequent to the 2.9.0 release, for security reasons, Log4j does not process
DTD in XML files. If you used DTD for including snippets, you have to use XInclude or Composite
Configuration instead.
> 
> The Log4j 2.11.0 API, as well as many core components, maintains binary compatibility
with previous releases with the following exceptions to Log4j Core. Log4j 2.11.0 moves code
from log4j-core to several new Maven modules. Dependencies to other jars that used to be optional
in log4j-core are now required in the new modules. The code in these modules have been repackaged.
These changes do not affect your configuration files.
> 
> The new modules are:
> 
> log4j-jdbc-dbc2
> 	• Group ID: org.apache.logging.log4j
> 	• Artifact ID: log4j-jdbc-dbc2
> 	• Old package: org.apache.logging.log4j.core.appender.db.jdbc
> 	• New package: org.apache.logging.log4j.jdbc.appender
> 
> log4j-jpa
> 	• Group ID: org.apache.logging.log4j
> 	• Artifact ID: log4j-jpa
> 	• Old package 1: org.apache.logging.log4j.core.appender.db.jpa
> 	• New package 1: org.apache.logging.log4j.jpa.appender
> 	• Old package 2: org.apache.logging.log4j.core.appender.db.jpa.converter
> 	• New package 2: org.apache.logging.log4j.jpa.converter
> 
> log4j-mongodb2
> 	• Group ID: org.apache.logging.log4j
> 	• Artifact ID: log4j-mongodb2
> 	• Old package: org.apache.logging.log4j.mongodb
> 	• New package: org.apache.logging.log4j.mongodb2
> 
> log4j-mongodb3
> 	• Group ID: org.apache.logging.log4j
> 	• Artifact ID: log4j-mongodb3
> 	• Old package: org.apache.logging.log4j.mongodb
> 	• New package: org.apache.logging.log4j.mongodb3
> 
> GA Release 2.10.0
> 
> Changes in this version include:
> 
> New Features
> 
> 	• LOG4J2-2120: Properly escape newlines and other control characters in JSON. Thanks
to Carter Douglas Kozak.
> 	• LOG4J2-2109: Add property to disable message pattern converter lookups. Thanks to
Carter Douglas Kozak.
> 	• LOG4J2-2112: MapMessage should use deep toString for values. Thanks to Carter Douglas
Kozak.
> 	• LOG4J2-2103: XML encoding for PatternLayout.
> 	• LOG4J2-2114: Provide a native Log4j 2 implementation of Eclipse Jetty's org.eclipse.jetty.util.log.Logger.
> 	• LOG4J2-1203: Allow filtering of line breaks in layout pattern. Thanks to Robert
Turner.
> 	• LOG4J2-2098: Add a noop AppenderSkeleton for applications still using Log4j 1.x.
> 	• LOG4J2-2062: Add possibility of sending the key of a message to Kafka using KafkaAppender.
Thanks to Jorge Sanchez.
> 	• LOG4J2-2056: Modularize Log4j-api and make most other log4j jars automatic modules.
> 	• LOG4J2-1431: Simplify log4j system property naming scheme.
> 	• LOG4J2-1809: Add global configuration environment SPI.
> 	• LOG4J2-1694: Add fields with fixed values to JSON/XML/YAML layouts. Thanks to Michal
Dvořák.
> 	• LOG4J2-2054: Provide ways to configure SSL that avoid plain-text passwords in the
log4j configuration. The configuration may now specify a system environment variable that
holds the password, or the path to a file that holds the password.
> 	• LOG4J2-2071: Add org.apache.logging.log4j.core.config.composite.CompositeConfiguration#toString().
Thanks to Carter Kozak.
> Fixed Bugs
> 
> 	• LOG4J2-2107: MapMessage supports both StringBuilderFormattable and MultiformatMessage.
Thanks to Carter Douglas Kozak.
> 	• LOG4J2-2102: MapMessage JSON encoding will escape keys and values. Thanks to Carter
Douglas Kozak.
> 	• LOG4J2-2101: Non-string value in MapMessage caused ClassCastException. Thanks to
Carter Douglas Kozak.
> 	• LOG4J2-2091: Log4j respects the configured "log4j2.is.webapp" property Thanks to
Carter Douglas Kozak.
> 	• LOG4J2-2100: LevelMixIn class for Jackson is coded incorrectly
> 	• LOG4J2-2087: Jansi now needs to be enabled explicitly (by setting system property
log4j.skipJansi to false). To avoid causing problems for web applications, Log4j will no longer
automatically try to load Jansi without explicit configuration. Thanks to Andy Gumbrecht.
> 	• LOG4J2-2060: AbstractDatabaseManager should make a copy of LogEvents before holding
references to them: AsyncLogger log events are mutable.
> 	• LOG4J2-2055: If Log4j is used as the Tomcat logging implementation startup might
fail if an application also uses Log4j.
> 	• LOG4J2-2031: Until this change, messages appeared out of order in log file any time
when the async logging queue was full. With this change, messages are only logged out of order
to prevent deadlock when Log4j2 detects recursive logging while the queue is full.
> 	• LOG4J2-2053: Exception java.nio.charset.UnsupportedCharsetException: cp65001 in
2.9.0.
> 	• LOG4J2-1216: Nested pattern layout options broken. Thanks to Thies Wellpott, Barna
Zsombor Klara, GFriedrich.
> 	• LOG4J2-2070: Log4j1XmlLayout does not provide the entire stack trace, it is missing
the caused by information. Thanks to Doug Hughes.
> 	• LOG4J2-2036: CompositeConfiguration supports Reconfiguration. PR #115. Thanks to
Robert Haycock.
> 	• LOG4J2-2073: Log4j-config.xsd should make AppenderRef optional for each Logger element.
Thanks to Patrick Lucas.
> 	• LOG4J2-2074: The console appender should say why it cannot load JAnsi.
> 	• LOG4J2-2085: Wrong Apache Commons CSV version referenced in the Javadoc of CsvParameterLayout.
Thanks to István Neuwirth.
> Changes
> 
> 	• LOG4J2-2076: Split up log4j-nosql into one module per appender.
> 	• LOG4J2-2088: Upgrade picocli to 2.0.3 from 0.9.8.
> 	• LOG4J2-2025: Provide support for overriding the Tomcat Log class in Tomcat 8.5+.
> 	• LOG4J2-2057: Support new SLF4J binding mechanism introduced in SLF4J 1.8.
> 	• LOG4J2-2052: Disable thread name caching by default when running on Java 8u102 or
later.
> 	• LOG4J2-1896: Update classes in org.apache.logging.log4j.core.net.ssl in APIs from
String to a PasswordProvider producing char[] for passwords.
> 	• LOG4J2-2078: Update LMAX disruptor from 3.3.6 to 3.3.7.
> 	• LOG4J2-2081: Update Apache Commons Compress from 1.14 to 1.15.
> 	• LOG4J2-2089: [TagLib] Update servlet-api provided dependency from 2.5 to 3.0.1.
> 	• LOG4J2-2096: Update Apache Kafka kafka-clients from 0.11.0.1 to 1.0.0.
> 	• LOG4J2-2077: Update from Jackson 2.9.1 to 2.9.2.
> 	• LOG4J2-2117: Jackson dependencies for 2.9.2 incorrectly bring in jackson-annotations
2.9.0 instead of 2.9.2.
> Apache Log4j 2.10.0 requires a minimum of Java 7 to build and run. Log4j 2.3 was the
last release that supported Java 6.
> 
> Basic compatibility with Log4j 1.x is provided through the log4j-1.2-api component, however
it does not implement some of the very implementation specific classes and methods. The package
names and Maven groupId have been changed to org.apache.logging.log4j to avoid any conflicts
with log4j 1.x.
> 
> 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/
> 



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