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 <div class="sect1">
 <h2 id="release-notes-2-17-2">2.17.2</h2>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
 <dt class="hdlist1">Release date</dt>
 <dd>
 <p>2022-02-23</p>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p>This release contains the changes noted below:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>Over 50 improvements and fixes to the Log4j 1.x support.
 Continued testing has shown it is a suitable replacement for Log4j 1.x in most cases.</p>
 </li>
 <li>
 <p>Scripting now requires a system property be specified naming the languages the user wishes to allow.
 The scripting engine will not load if the property isn&#8217;t set.</p>
 </li>
 <li>
 <p>By default, the only remote protocol allowed for loading configuration files is HTTPS.
 Users can specify a system property to allow others or prevent remote loading entirely.</p>
 </li>
 <li>
 <p>Variable resolution has been modified so that only properties defined as properties in the configuration file can be recursive.
 All other Lookups are now non-recursive.
 This addresses issues users were having resolving lookups specified in property definitions for use in the <code>RoutingAppender</code> and <code>RollingFileAppender</code> due to restrictions put in place in 2.17.1.</p>
 </li>
 <li>
 <p>Many other fixes and improvements.</p>
 </li>
 </ul>
 </div>
 <div class="paragraph">
 <p>Due to a break in compatibility in the SLF4J binding, Log4j now ships with two versions of the SLF4J to Log4j adapters.
 <code>log4j-slf4j-impl</code> should be used with SLF4J 1.7.x and earlier and <code>log4j-slf4j18-impl</code> should be used with SLF4J 1.8.x and later.
 SLF4J-2.0.0 alpha releases are not fully supported.
 See <a href="https://issues.apache.org/jira/browse/LOG4J2-2975">LOG4J2-2975</a> and <a href="https://jira.qos.ch/browse/SLF4J-511">SLF4J-511</a>.</p>
 </div>
 <div class="paragraph">
 <p>The Log4j 2.17.2 API, as well as many core components, maintains binary compatibility with previous releases.</p>
 </div>
 <div class="paragraph">
 <p>Apache Log4j 2.17.2 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.</p>
 </div>
 <div class="paragraph">
 <p>For complete information on Apache Log4j 2, including instructions on how to submit bug reports, patches, or suggestions for improvement, see <a href="http://logging.apache.org/log4j/2.x/">the Apache Log4j 2 website</a>.</p>
 </div>
 <div class="sect2">
 <h3 id="release-notes-2-17-2-added">Added</h3>
 <div class="ulist">
 <ul>
 <li>
 <p>Add Configurator.setLevel(Logger, Level), setLevel(String, String), and setLevel(Class, Level).</p>
 </li>
 <li>
 <p>Add org.apache.logging.log4j.core.appender.AsyncAppender.getAppenders() to more easily port from org.apache.log4j.AsyncAppender.getAllAppenders().</p>
 </li>
 <li>
 <p>Require log4j2.Script.enableLanguages to be specified to enable scripting for specific languages. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2486">LOG4J2-2486</a>)</p>
 </li>
 <li>
 <p>Add the log4j-to-jul JDK Logging Bridge (<a href="https://issues.apache.org/jira/browse/LOG4J2-3282">LOG4J2-3282</a>)</p>
 </li>
 <li>
 <p>Limit loading of configuration via a url to https by default. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3297">LOG4J2-3297</a>)</p>
 </li>
 <li>
 <p>Add TB support to FileSize. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3303">LOG4J2-3303</a>)</p>
 </li>
 <li>
 <p>Add shorthand syntax for properties configuration format for specifying a logger level and appender refs. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3341">LOG4J2-3341</a>)</p>
 </li>
 <li>
 <p>Add optional additional fields to NoSQLAppender. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3391">LOG4J2-3391</a>)</p>
 </li>
 </ul>
 </div>
 </div>
 <div class="sect2">
 <h3 id="release-notes-2-17-2-changed">Changed</h3>
 <div class="ulist">
 <ul>
 <li>
 <p>Bump Jackson from 2.12.4 to 2.13.1.</p>
 </li>
 <li>
 <p>Bump Mockito from 3.11.2 to 4.2.0.</p>
 </li>
 <li>
 <p>Bump Woodstox 6.2.6 to 6.2.8.</p>
 </li>
 <li>
 <p>Bump awaitility from 4.0.3 to 4.1.1 #663.</p>
 </li>
 <li>
 <p>Bump de.flapdoodle.embed:de.flapdoodle.embed.mongo from 3.0.0 to 3.4.1. Update tests for binary incompatibilities in APIs.</p>
 </li>
 <li>
 <p>Bump maven-compiler-plugin from 3.8.1 to 3.9.0.</p>
 </li>
 <li>
 <p>Bump mongodb3.version from 3.12.4 to 3.12.10 #605.</p>
 </li>
 <li>
 <p>Bump net.javacrumbs.json-unit:json-unit from 2.27.0 to 2.28.0.</p>
 </li>
 <li>
 <p>Bump org.apache.activemq:activemq-broker from 5.16.3 to 5.16.4.</p>
 </li>
 <li>
 <p>Bump org.apache.maven.plugins:maven-javadoc-plugin from 3.3.1 to 3.3.2.</p>
 </li>
 <li>
 <p>Bump org.assertj:assertj-core from 3.20.2 to 3.22.0.</p>
 </li>
 <li>
 <p>Bump org.codehaus.groovy:groovy-* from 3.0.8 to 3.0.9.</p>
 </li>
 <li>
 <p>Bump org.eclipse.persistence:org.eclipse.persistence.jpa from 2.7.9 to 2.7.10.</p>
 </li>
 <li>
 <p>Bump org.fusesource.jansi:jansi from 2.3.4 to 2.4.0.</p>
 </li>
 <li>
 <p>Bump org.jacoco:jacoco-maven-plugin from 0.8.6 to 0.8.7.</p>
 </li>
 <li>
 <p>Bump org.junit.jupiter:junit-* from 5.7.2 to 5.8.2.</p>
 </li>
 <li>
 <p>Bump org.junit-pioneer:junit-pioneer from 1.5.0 to 1.6.1.</p>
 </li>
 <li>
 <p>Bump org.mongodb:bson from 4.2.2 to 4.5.0.</p>
 </li>
 <li>
 <p>Bump org.mongodb:mongodb-driver-sync from 4.2.2 to 4.5.0.</p>
 </li>
 <li>
 <p>Bump org.springframework:spring-* from 5.3.13 to 5.3.15.</p>
 </li>
 <li>
 <p>Bump org.xmlunit:xmlunit-* from 2.8.3 to 2.8.4.</p>
 </li>
 <li>
 <p>Replace usages of "compile" with "implementation" in the Gradle docs. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3215">LOG4J2-3215</a>)</p>
 </li>
 <li>
 <p>Change modifier of method org.apache.logging.log4j.core.tools.Generate#generate to public (was package private) to facilitate automated code generation. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3267">LOG4J2-3267</a>)</p>
 </li>
 <li>
 <p>log4j-jpl formats message parameters correctly using MessageFormat. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3345">LOG4J2-3345</a>)</p>
 </li>
 <li>
 <p>Bump Tomcat from 8.5.20 to 10.0.14 in log4j-appserver along with some dependency clean-up. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3368">LOG4J2-3368</a>)</p>
 </li>
 </ul>
 </div>
 </div>
 <div class="sect2">
 <h3 id="release-notes-2-17-2-fixed">Fixed</h3>
 <div class="ulist">
 <ul>
 <li>
 <p>Fix DTD error: Add missing ELEMENT for Marker.</p>
 </li>
 <li>
 <p>Fix log4j-jakarta-web service file #723.</p>
 </li>
 <li>
 <p>JndiManager reverts to 2.17.0 behavior: Read the system property for each call.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge PropertiesConfiguration.buildAppender not adding filters to custom appender. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3281">LOG4J2-3281</a>)</p>
 </li>
 <li>
 <p>Flag LogManager as initialized if the LoggerFactory is provided as a property. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3304">LOG4J2-3304</a>)</p>
 </li>
 <li>
 <p>OptionConverter could cause a StackOverflowError. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3306">LOG4J2-3306</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge should ignore case in properties file keys. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3316">LOG4J2-3316</a>)</p>
 </li>
 <li>
 <p>Fix RoutingAppender backward compatibility and disallow recursive evaluation of lookup results outside of configuration properties. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3317">LOG4J2-3317</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class org.apache.log4j.spi.LoggingEvent missing constructors and public instance variable. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3326">LOG4J2-3326</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge fixes parsing filters in properties configuration file #680. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3326">LOG4J2-3326</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing OptionConverter.instantiateByKey(Properties, String, Class, Object). (<a href="https://issues.apache.org/jira/browse/LOG4J2-3326">LOG4J2-3326</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge does not support system properties in log4j.xml. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3328">LOG4J2-3328</a>)</p>
 </li>
 <li>
 <p>Configurator.setLevel not fetching the correct LoggerContext. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3330">LOG4J2-3330</a>)</p>
 </li>
 <li>
 <p>Fix ThreadContextDataInjector initialization deadlock (<a href="https://issues.apache.org/jira/browse/LOG4J2-3333">LOG4J2-3333</a>)</p>
 </li>
 <li>
 <p>Fix substitutions when programmatic configuration is used (<a href="https://issues.apache.org/jira/browse/LOG4J2-3358">LOG4J2-3358</a>)</p>
 </li>
 <li>
 <p>AppenderLoggingException logging any exception to a MongoDB Appender. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3392">LOG4J2-3392</a>)</p>
 </li>
 <li>
 <p>Possible NullPointerException in MongoDb4DocumentObject, MongoDbDocumentObject, DefaultNoSqlObject. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3392">LOG4J2-3392</a>)</p>
 </li>
 <li>
 <p>Fix DefaultConfiguration leak in PatternLayout (<a href="https://issues.apache.org/jira/browse/LOG4J2-3404">LOG4J2-3404</a>)</p>
 </li>
 <li>
 <p>Document that the Spring Boot Lookup requires the log4j-spring-boot dependency. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3405">LOG4J2-3405</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge Check for non-existent appender when parsing properties #761. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3407">LOG4J2-3407</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge supports global threshold #764. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3407">LOG4J2-3407</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge throws a ClassCastException when logging a Map with non-String keys. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3410">LOG4J2-3410</a>)</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.Hierarchy.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.component.helpers.Constants.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.helpers.Loader.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.helpers.LogLog.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.spi.DefaultRepositorySelector.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.spi.NOPLoggerRepository and NOPLogger.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge adds org.apache.log4j.spi.RootLogger.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class Category is missing some protected instance variables.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class Category should implement AppenderAttachable.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class ConsoleAppender should extend WriterAppender and provide better compatibility with custom appenders.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class LogManager default constructor should be public.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class OptionConverter is missing selectAndConfigure() methods.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class PatternLayout is missing constants DEFAULT_CONVERSION_PATTERN and TTCC_CONVERSION_PATTERN.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge class PropertyConfigurator should implement Configurator.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge creates a SocketAppender instead of a SyslogAppender.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge implements LogManager.getCurrentLoggers() fully.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge implements most of DOMConfigurator.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge interface Configurator doConfigure() methods should use LoggerRepository, not LoggerContext.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge interface org.apache.log4j.spi.RendererSupport was in the wrong package and incomplete.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge interfaces missing from package org.apache.log4j.spi: ThrowableRenderer, ThrowableRendererSupport, TriggeringEventEvaluator.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge issues with filters #753.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge method Category.exists(String) should be static.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge method NDC.inherit(Stack) should not use generics to provide source compatibility.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge methods Category.getChainedPriority() and getEffectiveLevel() should not be final.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge methods missing in org.apache.log4j.Category: getDefaultHierarchy(), getHierarchy(), getLoggerRepository().</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missed</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missed org.apache.log4j.pattern.FormattingInfo.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missed org.apache.log4j.pattern.NameAbbreviator.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing DefaultThrowableRenderer.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing FormattingInfo.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing PatternConverter.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing PatternParser.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing UtilLoggingLevel.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing class org.apache.log4j.or.RendererMap.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing some LocationInfo constructors.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge missing some ThrowableInformation constructors.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge now logs a warning instead of throwing an NullPointerException when building a Syslog appender with a missing "SyslogHost" param.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge should allow property and XML attributes to start with either an upper-case or lower-case letter.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge supports the SocketAppender.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge throws ClassCastException when using SimpleLayout and others #708.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge uses some incorrect default property values in some appenders.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge uses the wrong default values for a TTCCLayout #709.</p>
 </li>
 <li>
 <p>Log4j 1.2 bridge uses the wrong file pattern for rolling file appenders #710.</p>
 </li>
 <li>
 <p>Trim whitespace before parsing a String into an Integer.</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 </div>
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