This is a vote to release Log4j 2.11.0, the next version of the Log4j 2 project.

Please download, test, and cast your votes on the log4j developers list.
[] +1, release the artifacts
[] -1, don't release because...

The vote will remain open for 72 hours (or more if required). All votes are 
welcome and we encourage everyone to test the release, but only Logging PMC 
votes are “officially” counted. As always, at least 3 +1 votes and more 
positive than negative votes are required.

Note that this release supports SLF4J 1.7.x and SLF4J 1.8.x. Because SLF4J 
1.7.x requires implementations to include classes in the org.slf4j.impl package 
log4j-sl4j-impl cannot be used as a Java 9 module. Support for SLF4J 1.7.x will 
be removed in a future release.

Changes in this version include:

New Features

        • LOG4J2-2253: Add API to enable iterating over message parameters 
without creating temporary objects. Thanks to Carter Kozak.
        • LOG4J2-1883: Added support for precise (micro and nanosecond) 
timestamps when running on Java 9. A limited number of precise %d date formats 
are supported with PatternLayout. POTENTIAL BREAKING CHANGE: The XML, JSON and 
YAML formats have changed: they no longer have the "timeMillis" attribute and 
instead have an "Instant" element with "epochSecond" and "nanoOfSecond" 
attributes. Thanks to Anthony Maire.
        • LOG4J2-2190: Output JSON object for ObjectMessage in JsonLayout. 
Thanks to Franz Wong.
        • LOG4J2-2191: Made log4j-core a multi-release ("multi-version") jar, 
added log4j-core-java9 module.
        • LOG4J2-2143: Add missing converters to PatternLayout.
        • LOG4J2-2160: Add API 
        • LOG4J2-2179: The MongoDB Appender should use a keys and values for a 
Log4j MapMessage.
        • LOG4J2-2180: Add a MongoDbProvider builder for and deprecate 
        • LOG4J2-2181: The JDBC Appender should use keys and values from a 
Log4j MapMessage.
        • LOG4J2-2185: Add a simple JDBC DriverManager-based ConnectionSource 
that uses JDBC's DriverManager#getConnection(String, String, String).
        • LOG4J2-2186: Add a JDBC ConnectionSource that provides pooling 
through Apache Commons DBCP 2.
        • LOG4J2-2187: Add a hook for a Connection Source for a JDBC Appender 
to release its resources.
        • LOG4J2-2203: Add 
        • LOG4J2-2206: Add method 
org.apache.logging.log4j.core.util.WatchManager.reset(File) and reset().
        • LOG4J2-2208: Add debug logging to 

Fixed Bugs

        • LOG4J2-2271: Move module-info.class to META-INF/versions/9 directory.
        • LOG4J2-2254: Incorrect automatics module name header was being 
included in manifests.
        • LOG4J2-2247: NullPointerException would occur when header was 
provided to a Layout on RollingRandingAccessFileAppender with 
        • LOG4J2-2129: Log4j2 throws NoClassDefFoundError in Java 9 in 
java.util.ServiceLoader. Thanks to Blazej Bucko.
        • LOG4J2-2158: Fixed bug where ThreadContext map was cleared, resulting 
in entries being only available for one log event. Thanks to Björn Kautler.
        • LOG4J2-2002: Avoid null attribute values in 
DefaultConfigurationBuilder. Thanks to Paul Burrowes.
        • LOG4J2-2175: Fix typo in Property Substitution docs. Thanks to 
Behrang Saeedzadeh.
        • LOG4J2-2163: Allow SortedArrayStringMap to be filtered upon 
deserialization. Fix build error in Java 9 when compiling log4j-core test 
        • LOG4J2-2157: Don't create exit message in traceExit(R) when logging 
is disabled. Thanks to Malte Skoruppa.
        • LOG4J2-2123: DefaultMergeStrategy did not merge filters on loggers 
correctly. Thanks to Jacob Tolar.
        • LOG4J2-2126: Removed compile-time dependency on Java Management APIs 
from Log4J API module to improve compatibility with Android Platform which does 
not support JMX extensions. Thanks to Oleg Kalnichevski.
        • LOG4J2-2270: Strings::join, when called with [null] returns "null" 
instead of EMPTY. Thanks to Cyril Martin.
        • LOG4J2-2276: ConcurrentModificationException from 
Thanks to Sean Baxter.
        • LOG4J2-2274: Allow EnvironmentPropertySource to run with a 
SecurityManager that rejects environment variable access. Thanks to Sebastien 
        • LOG4J2-2279: Allow SystemPropertiesPropertySource to run with a 
SecurityManager that rejects system property access. Thanks to Gary Gregory.


        • LOG4J2-2273: Documentation fix in manual page for custom 
configurations. Thanks to Bruno P. Kinoshita.
        • LOG4J2-2252: Reusable LogEvents now pass the original format string 
to downstream components like layouts and filters. Thanks to Carter Kozak.
        • LOG4J2-2250: The internal status logger timestamp format is now 
configurable with system property log4j2.StatusLogger.DateFormat.
        • LOG4J2-2236: Removed unnecessary dependency on jcommander since Log4j 
uses embedded picocli since 2.9.
        • LOG4J2-2146: Update version of maven bundle plugin to 3.4.0. Convert 
bundle plugin error to a warning.
        • LOG4J2-2215: Reduce compiler warnings in log4j-api.
        • LOG4J2-2127: Removed unnecessary threadlocal StringBuilder field from 
MdcPatternConverter. Thanks to Carter Kozak.
        • LOG4J2-2194: Require Java 9 to compile the log4j-perf module to allow 
benchmarking with Java 9 APIs.
        • LOG4J2-2193: Update JMH to version 1.19 from 1.1.1.
        • LOG4J2-2132: Update ZeroMQ's jeromq from 0.4.2 to 0.4.3.
        • LOG4J2-2165: Update Jackson from 2.9.2 to 2.9.3.
        • LOG4J2-2184: Update MongoDB driver from 3.0.4 to 3.6.1.
        • LOG4J2-2197: Document default property value support. Thanks to 
Fabrice Daugan.
        • LOG4J2-2198: Update MongoDB dependencies from classic to modern.
        • LOG4J2-2204: 
org.apache.logging.log4j.core.util.WatchManager.getWatchers() should 
pre-allocate its new Map.
        • LOG4J2-2209: Rename existing MongoDb plugin and related artifacts 
from MongoDb to MongoDb2.
        • LOG4J2-2210: Fix error log message for Script which says ScriptFile 
instead. Thanks to Björn Kautler.
        • LOG4J2-2212: Unnecessary contention in 
CopyOnWriteSortedArrayThreadContextMap. Thanks to Daniel Feist, Gary Gregory.
        • LOG4J2-2213: Unnecessary contention in 
GarbageFreeSortedArrayThreadContextMap. Thanks to Daniel Feist, Gary Gregory.
        • LOG4J2-2214: Unnecessary contention in DefaultThreadContextMap. 
Thanks to Daniel Feist, Gary Gregory.
        • LOG4J2-2182: NullPointerException at 
org.apache.logging.log4j.util.Activator.loadProvider( in 
log4j 2.10.0. Thanks to liwenxian2017, Gary Gregory.
        • LOG4J2-2202: MarkerFilter onMismatch invalid attribute in 
.properties. Thanks to Kilian, Gary Gregory.
        • LOG4J2-2219: Configuration builder classes should look for 
"onMismatch", not "onMisMatch". Thanks to Kilian, Gary Gregory.
        • LOG4J2-2205: New module log4j-mongodb3: Remove use of deprecated 
MongoDB APIs and code to the Java driver version 3 API. Thanks to Gary Gregory.
        • LOG4J2-2188: Split off JPA support into a new module log4j-jpa. 
Thanks to Gary Gregory.
        • LOG4J2-2229: Update Jackson from 2.9.3 to 2.9.4. Thanks to Gary 
        • LOG4J2-2243: Cannot see or copy all of certain JAnsi exception 
messages on Windows due to NUL characters. Thanks to Gary Gregory.
        • LOG4J2-2245: Update Apache Commons Compress from 1.15 to 1.16.1. 
Thanks to Gary Gregory.
        • LOG4J2-2259: Update MongoDB 3 module from driver 3.6.1 to 3.6.3.
        • LOG4J2-2260: [SMTP] Update javax.mail from 1.6.0 to 1.6.1.
        • LOG4J2-2264: Update JAnsi from 1.16 to 1.17.

a)  for a new copy do "git clone 
<>" and then "git 
checkout tags/log4j-2.11.0-rc1”
b) for an existing working copy to “git pull” and then “git checkout 

Web Site: 

Maven Artifacts: 

Distribution archives: 

You may download all the Maven artifacts by executing:
wget -e robots=off --cut-dirs=7 -nH -r -p -np --no-check-certificate


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