Thank you for being a great bunch of people to work with and learn from.

On Aug 30, 2017 6:31 PM, "Remko Popma" <remko.po...@gmail.com> wrote:

Blogged: https://blogs.apache.org/logging/entry/log4j-2-9-released

(Shameless plug) Every java main() method deserves http://picocli.info

> On Aug 31, 2017, at 9:26, Ralph Goers <ralph.go...@dslextreme.com> wrote:
>
> The Apache Log4j 2 team is pleased to announce the Log4j 2.9.0 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 the first support of Java 9 as well as bugfixes and
minor enhancements. The Log4j API was modified to use
java.util.ServiceLoader to locate Log4j implementations, although the
former binding mechanism is still supported. The Log4j jar is now a
multi-release jar to provide implementations of the 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 subsequent to the 2.9 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 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 2.9.0 API, as well as many core components, maintains binary
compatibility with previous releases.
>
> <https://github.com/apache/logging-log4j2/blob/master/
RELEASE-NOTES.md#ga-release-290>GA Release 2.9.0
>
> Changes in this version include:
>
> <https://github.com/apache/logging-log4j2/blob/master/
RELEASE-NOTES.md#new-features>New Features
>
> LOG4J2-2008 <https://issues.apache.org/jira/browse/LOG4J2-2008>: Support
printing multiple StructuredData elements in RFC5424Layout.
> LOG4J2-1986 <https://issues.apache.org/jira/browse/LOG4J2-1986>: Public
API for parsing the output from JsonLayout/XmlLayout/YamlLayout into a
LogEvent.
> LOG4J2-1981 <https://issues.apache.org/jira/browse/LOG4J2-1981>:
JsonLayout, XmlLayout and YamlLayout support 0-byte termination of log
events.
> LOG4J2-1864 <https://issues.apache.org/jira/browse/LOG4J2-1864>: Support
capped collections for MongoDb appender. Thanks to Matthias Kappeller.
> LOG4J2-1813 <https://issues.apache.org/jira/browse/LOG4J2-1813>: Log4j2
will now print all internal logging to the console if system property
log4j2.debug is defined with any value (or no value).
> LOG4J2-1766 <https://issues.apache.org/jira/browse/LOG4J2-1766>:
Temporary compress directory during rollover (#88). Thanks to Pierrick
HYMBERT.
> LOG4J2-1814 <https://issues.apache.org/jira/browse/LOG4J2-1814>: Added
wrapper classes CustomLoggerGenerator and ExtendedLoggerGenerator to avoid
class name with a dollar ($) character which has special meaning in many
*nix command line environments.
> LOG4J2-1884 <https://issues.apache.org/jira/browse/LOG4J2-1884>: Added
process ID (pid) pattern converter.
> LOG4J2-1699 <https://issues.apache.org/jira/browse/LOG4J2-1699>:
Configurable Log File Permissions with PosixFilePermission. Thanks to
Demetrios Dimatos, Pierrick HYMBERT.
> LOG4J2-1945 <https://issues.apache.org/jira/browse/LOG4J2-1945>: Generate
source jas for all test jars.
> LOG4J2-1934 <https://issues.apache.org/jira/browse/LOG4J2-1934>: JMS
Appender does not know how to recover from a broken connection.
> LOG4J2-1955 <https://issues.apache.org/jira/browse/LOG4J2-1955>: JMS
Appender should be able connect to a broker (later) even it is not present
at configuration time.
> LOG4J2-1874 <https://issues.apache.org/jira/browse/LOG4J2-1874>: Added
methods ::writeBytes(ByteBuffer) and ::writeBytes(byte[], int, int) to
ByteBufferDestination interface and use these methods in TextEncoderHelper
where possible to prepare for future enhancements to reduce lock
contention. Thanks to Roman Leventov.
> LOG4J2-1442 <https://issues.apache.org/jira/browse/LOG4J2-1442>: Generic
HTTP appender.
> LOG4J2-1935 <https://issues.apache.org/jira/browse/LOG4J2-1935>: Add
with(String, primitive) methods to org.apache.logging.log4j.
message.MapMessage.
> LOG4J2-1930 <https://issues.apache.org/jira/browse/LOG4J2-1930>: Add
forEach() methods to org.apache.logging.log4j.message.MapMessage.
> LOG4J2-1932 <https://issues.apache.org/jira/browse/LOG4J2-1932>: Add
containsKey() methods to org.apache.logging.log4j.message.MapMessage.
> LOG4J2-1854 <https://issues.apache.org/jira/browse/LOG4J2-1854>: Support
null byte delimiter in GelfLayout. Thanks to Xavier Jodoin.
> LOG4J2-1359 <https://issues.apache.org/jira/browse/LOG4J2-1359>: Add
support for Java 9 StackWalker.
> LOG4J2-1880 <https://issues.apache.org/jira/browse/LOG4J2-1880>: Warn
when a configuration file for an inactive ConfigurationFactory is found.
> LOG4J2-1855 <https://issues.apache.org/jira/browse/LOG4J2-1855>: Add an
optional random delay in TimeBasedTriggeringPolicy Thanks to Anthony Maire.
> LOG4J2-1860 <https://issues.apache.org/jira/browse/LOG4J2-1860>: Shortcut
to add Property and KeyValuePair component in ConfigurationBuilder.
> LOG4J2-1294 <https://issues.apache.org/jira/browse/LOG4J2-1294>: The JMS
Appender should use a JMS MapMessage for a Log4j MapMessage.
> <https://github.com/apache/logging-log4j2/blob/master/
RELEASE-NOTES.md#fixed-bugs>Fixed Bugs
>
> LOG4J2-1833 <https://issues.apache.org/jira/browse/LOG4J2-1833>: Prevent
NullPointerException when a file name is specified with the
DirectWriteRolloverStrategy.
> LOG4J2-2018 <https://issues.apache.org/jira/browse/LOG4J2-2018>: Fix
incorrect documentation for LoggerNameLevelRewritePolicy.
> LOG4J2-922 <https://issues.apache.org/jira/browse/LOG4J2-922>: Parameter
of mdcId in SyslogAppender has no default value. Thanks to angus.aqlu, Paul
Burrowes.
> LOG4J2-2001 <https://issues.apache.org/jira/browse/LOG4J2-2001>:
StyleConverter.newInstance argument validation is incorrect. Thanks to Paul
Burrowes.
> LOG4J2-1999 <https://issues.apache.org/jira/browse/LOG4J2-1999>:
HighlightConverter converts all unrecognized levels to DEBUG. Thanks to
Paul Burrowes.
> LOG4J2-2013 <https://issues.apache.org/jira/browse/LOG4J2-2013>:
SslSocketManager does not apply SSLContext on TCP reconnect. Thanks to
Taylor Patton, Gary Gregory.
> LOG4J2-2016 <https://issues.apache.org/jira/browse/LOG4J2-2016>: Mark
FileRenameAction as successful when using alternative ways to move files.
Thanks to Benjamin Jaton.
> LOG4J2-2012 <https://issues.apache.org/jira/browse/LOG4J2-2012>: No
compression when using a separate drive in Linux. Thanks to Benjamin Jaton.
> LOG4J2-1888 <https://issues.apache.org/jira/browse/LOG4J2-1888>: Log4j
throws a java.nio.charset.UnsupportedCharsetException: cp65001. Thanks to
Misagh Moayyed.
> LOG4J2-1990 <https://issues.apache.org/jira/browse/LOG4J2-1990>:
ConcurrentModificationException logging a parameter of type Map. Thanks to
Philippe Mouawad.
> LOG4J2-1311 <https://issues.apache.org/jira/browse/LOG4J2-1311>:
SocketAppender will lose several events after re-connection to server.
Thanks to Xibing Liang.
> LOG4J2-1977 <https://issues.apache.org/jira/browse/LOG4J2-1977>: Consider
the StringBuilder's capacity instead of content length when trimming.
Thanks to Jerry xnslong.
> LOG4J2-1971 <https://issues.apache.org/jira/browse/LOG4J2-1971>: Register
log4j-core as an OSGi service. Skip tests for LOG4J2-1766 on MacOS. Use
group "staff" for LOG4J2-1699 test on MacOS.
> LOG4J2-1994 <https://issues.apache.org/jira/browse/LOG4J2-1994>:
TcpSocketServer does not close accepted Sockets.
> LOG4J2-1987 <https://issues.apache.org/jira/browse/LOG4J2-1987>: Log4J
JUL Bridge and RMI Security Manager causes access denied
("java.util.logging.LoggingPermission" "control") Thanks to Andreas Felder.
> LOG4J2-1982 <https://issues.apache.org/jira/browse/LOG4J2-1982>:
Log4j-config.xsd only allows one AppenderRef element for each Logger
element. Thanks to Christoph Lembeck.
> LOG4J2-1985 <https://issues.apache.org/jira/browse/LOG4J2-1985>: Fix
default buffer size to match documentation (from 8102 to 8192 a.k.a. 8KB.)
Thanks to Kenneth McFarland.
> LOG4J2-1912 <https://issues.apache.org/jira/browse/LOG4J2-1912>:
CompositeConfiguration logs warning "Unable to determine URI for
configuration." However, the reconfiguration is completed. Thanks to R Ri.
> LOG4J2-1964 <https://issues.apache.org/jira/browse/LOG4J2-1964>: Dynamic
reconfiguration does not work for filePattern of RollingFile. Thanks to
Pierrick HYMBERT.
> LOG4J2-1961 <https://issues.apache.org/jira/browse/LOG4J2-1961>:
Reconfigure breaks DirectWriteRolloverStrategy. Thanks to Christian Vent.
> LOG4J2-1943 <https://issues.apache.org/jira/browse/LOG4J2-1943>: The
eventPrefix attribute was being ignored in the RFC5424Layout.
> LOG4J2-1953 <https://issues.apache.org/jira/browse/LOG4J2-1953>:
JndiManager is not released when the JmsAppender builder catches an
exception trying to build itself.
> LOG4J2-1911 <https://issues.apache.org/jira/browse/LOG4J2-1911>: Improve
the documentation of the DynamicThresholdFilter.
> LOG4J2-1929 <https://issues.apache.org/jira/browse/LOG4J2-1929>:
EOFException with FormattedMessage. Thanks to Borys Sokolov.
> LOG4J2-1948 <https://issues.apache.org/jira/browse/LOG4J2-1948>: Trim
levels read from properties file to remove trailing spaces. Thanks to
Michael Lück.
> LOG4J2-1971 <https://issues.apache.org/jira/browse/LOG4J2-1971>:
ClassCastException: org.eclipse.osgi.internal.loader.SystemBundleLoader$1
cannot be cast to java.lang.ClassLoader. Thanks to liwenxian2017.
> LOG4J2-1876 <https://issues.apache.org/jira/browse/LOG4J2-1876>: More
reliable checking for runtime dependencies.
> LOG4J2-1867 <https://issues.apache.org/jira/browse/LOG4J2-1867>: Fix
configuration documentation.
> LOG4J2-1858 <https://issues.apache.org/jira/browse/LOG4J2-1858>: Ensure
the ThreadLocal StringBuilder in ParameterizedMessage won't hold
excessively much memory after logging a long message.
> LOG4J2-1885 <https://issues.apache.org/jira/browse/LOG4J2-1885>: Fix
documentation about default additivity value for loggers.
> LOG4J2-1920 <https://issues.apache.org/jira/browse/LOG4J2-1920>:
ScriptEngineManager is not available in Android and causes a
NoClassDefFoundError. Thanks to Ajitha.
> LOG4J2-1989 <https://issues.apache.org/jira/browse/LOG4J2-1989>: Clarify
Javadoc for AbstractTriggeringPolicy. Thanks to Kenneth McFarland.
> LOG4J2-1993 <https://issues.apache.org/jira/browse/LOG4J2-1993>: Fix
compiler warnings in LoggerConfigTest. Thanks to Kenneth McFarland.
> <https://github.com/apache/logging-log4j2/blob/master/
RELEASE-NOTES.md#changes>Changes
>
> LOG4J2-1928 <https://issues.apache.org/jira/browse/LOG4J2-1928>: Add
support for DirectWriteRolloverStrategy to RollingRandomAcessFileAppender.
> LOG4J2-2022 <https://issues.apache.org/jira/browse/LOG4J2-2022>:
RFC5424Layout now prints the process id.
> LOG4J2-2020 <https://issues.apache.org/jira/browse/LOG4J2-2020>: Remove
default layout from KafkaAppender.
> LOG4J2-2023 <https://issues.apache.org/jira/browse/LOG4J2-2023>: Use a
class' canonical name instead of name to create its logger name.
> LOG4J2-2015 <https://issues.apache.org/jira/browse/LOG4J2-2015>: Allow
KeyStoreConfiguration and TrustStoreConfiguration to find files as
resources.
> LOG4J2-2011 <https://issues.apache.org/jira/browse/LOG4J2-2011>: Replace
JCommander command line parser with picocli to let users run Log4j2 utility
applications without requiring an external dependency.
> LOG4J2-1984 <https://issues.apache.org/jira/browse/LOG4J2-1984>: Allow
maxLength of StructuredData to be specified by the user.
> LOG4J2-1071 <https://issues.apache.org/jira/browse/LOG4J2-1071>: Allow
for bufferSize=0 in SMTP appender. Thanks to Ben Ludkiewicz, Benjamin Jaton.
> LOG4J2-1261 <https://issues.apache.org/jira/browse/LOG4J2-1261>: Async
Loggers no longer use deprecated LMAX Disruptor APIs. (Disruptor-3.3.3 or
higher is now required.)
> LOG4J2-1908 <https://issues.apache.org/jira/browse/LOG4J2-1908>: Improved
error message when misconfigured with multiple incompatible appenders
targeting same file.
> LOG4J2-1954 <https://issues.apache.org/jira/browse/LOG4J2-1954>:
Configurations with multiple root loggers now fail loudly.
> LOG4J2-1958 <https://issues.apache.org/jira/browse/LOG4J2-1958>:
Deprecate SerializedLayout and remove it as default.
> LOG4J2-1959 <https://issues.apache.org/jira/browse/LOG4J2-1959>: Disable
DTD processing in XML configuration files.
> LOG4J2-1950 <https://issues.apache.org/jira/browse/LOG4J2-1950>: Fix
docker build with jdk9 requirements (#84). Thanks to Pierrick HYMBERT.
> LOG4J2-1801 <https://issues.apache.org/jira/browse/LOG4J2-1801>: Add more
detail to WARN "Ignoring log event" messages printed to the console after
log4j was shut down.
> LOG4J2-1926 <https://issues.apache.org/jira/browse/LOG4J2-1926>:
Facilitate log4j use in Android applications: remove dependency on RMI and
Management APIs from log4j-api.
> LOG4J2-1956 <https://issues.apache.org/jira/browse/LOG4J2-1956>: JMS
Appender broker password should be a char[], not a String.
> LOG4J2-1917 <https://issues.apache.org/jira/browse/LOG4J2-1917>: Support
using java.util.ServiceLoader to locate Log4j 2 API providers.
> LOG4J2-1966 <https://issues.apache.org/jira/browse/LOG4J2-1966>: Include
separator option of PatternLayout in manual (and other updates). Thanks to
M Sazzadul Hoque.
> LOG4J2-1851 <https://issues.apache.org/jira/browse/LOG4J2-1851>: Move
server components from log4j-core to new log4-server module.
> LOG4J2-1991 <https://issues.apache.org/jira/browse/LOG4J2-1991>: Refactor
SimpleMessage to be concise and clear (#100) Thanks to .
> LOG4J2-2017 <https://issues.apache.org/jira/browse/LOG4J2-2017>: Update
Jackson from 2.8.9 to 2.9.0.
> LOG4J2-1868 <https://issues.apache.org/jira/browse/LOG4J2-1868>: Update
ZeroMQ's JeroMQ from 0.3.6 to 0.4.0.
> LOG4J2-1960 <https://issues.apache.org/jira/browse/LOG4J2-1960>: Update
ZeroMQ's JeroMQ from 0.4.0 to 0.4.1.
> LOG4J2-1974 <https://issues.apache.org/jira/browse/LOG4J2-1974>: Update
ZeroMQ's JeroMQ from 0.4.1 to 0.4.2.
> LOG4J2-1869 <https://issues.apache.org/jira/browse/LOG4J2-1869>: Update
Kafka client from 0.10.1.1 to 0.10.2.0
> LOG4J2-1962 <https://issues.apache.org/jira/browse/LOG4J2-1962>: Update
Kafka client from 0.10.2.0 to 0.11.0.0
> LOG4J2-1872 <https://issues.apache.org/jira/browse/LOG4J2-1872>: Update
JavaMail from 1.5.5 to 1.5.6.
> LOG4J2-1879 <https://issues.apache.org/jira/browse/LOG4J2-1879>: Update
JAnsi from 1.14 to 1.15.
> LOG4J2-1877 <https://issues.apache.org/jira/browse/LOG4J2-1877>: Missing
documentation for Max index limit in DefaultRolloverStrategy. Thanks to
Chandra Tungathurthi.
> LOG4J2-1899 <https://issues.apache.org/jira/browse/LOG4J2-1899>: Add
missing getters to classes in package org.apache.logging.log4j.core.net.ssl.
> LOG4J2-1900 <https://issues.apache.org/jira/browse/LOG4J2-1900>: Update
JAnsi from 1.15 to 1.16.
> LOG4J2- <https://issues.apache.org/jira/browse/LOG4J2->: Update SLF4J
from 1.7.24 to 1.7.25.
> LOG4J2-1938 <https://issues.apache.org/jira/browse/LOG4J2-1938>: Update
Jackson from 2.8.7 to 2.8.9.
> LOG4J2-1970 <https://issues.apache.org/jira/browse/LOG4J2-1970>: Update
HdrHistogram from 2.1.8 to 2.1.9.
> LOG4J2-1975 <https://issues.apache.org/jira/browse/LOG4J2-1975>: Update
javax.persistence from 2.1.0 to 2.1.1.
> LOG4J2-1976 <https://issues.apache.org/jira/browse/LOG4J2-1976>: Update
org.osgi.core from 4.3.1 to 6.0.0.
> Apache Log4j 2.9.0 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/ <https://logging.apache.org/
log4j/2.x/>

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