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<div class="sect1">
<h2 id="release-notes-2-14-1">2.14.1</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">Release date</dt>
<dd>
<p>2021-03-06</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>This release contains a number of bug fixes and minor enhancements which are
listed below.</p>
</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.</p>
</div>
<div class="paragraph">
<p>The Log4j 2.14.1 API, as well as many core components, maintains binary compatibility with previous releases.</p>
</div>
<div class="paragraph">
<p>Log4j 2.14.1 requires a minimum of Java 8 to build and run.
Log4j 2.12.1 is the last release to support Java 7.</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-2-14-1-added">Added</h3>
<div class="ulist">
<ul>
<li>
<p>Enrich "map" resolver by unifying its backend with "mdc" resolver. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2962">LOG4J2-2962</a>)</p>
</li>
<li>
<p>Support stack trace truncation in JsonTemplateLayout. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2993">LOG4J2-2993</a>)</p>
</li>
<li>
<p>Replace JsonTemplateLayout resolver configurations table in docs with sections. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2999">LOG4J2-2999</a>)</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="release-notes-2-14-1-changed">Changed</h3>
<div class="ulist">
<ul>
<li>
<p>Allow reconfiguration when Log4j 1 configuration files are updated. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2893">LOG4J2-2893</a>)</p>
</li>
<li>
<p>Add Rollover Listener to aid in unit test validation. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2923">LOG4J2-2923</a>)</p>
</li>
<li>
<p>Replace outdated PatternLayout.createLayout() calls in docs with createDefaultLayout(). (<a href="https://issues.apache.org/jira/browse/LOG4J2-2977">LOG4J2-2977</a>)</p>
</li>
<li>
<p>Update JSON Unit 2.21.0 &#8594; 2.22.0.</p>
</li>
<li>
<p>Update JaCoCo 0.8.3 &#8594; 0.8.6.</p>
</li>
<li>
<p>Update Mockito 3.6.0 &#8594; 3.7.0.</p>
</li>
<li>
<p>Update MongoDB 3 plugin: org.mongodb:mongodb-driver 3.12.6 &#8594; 3.12.7.</p>
</li>
<li>
<p>Update MongoDB 4 plugin: org.mongodb:* 4.1.0 &#8594; 4.1.1.</p>
</li>
<li>
<p>Update Spring dependencies to 5.3.2, Spring Boot to 2.3.6, and Spring Cloud to Hoxton.SR9</p>
</li>
<li>
<p>Update Woodstox 5.0.3 &#8594; 6.2.3 to match Jackson 2.12.1.</p>
</li>
<li>
<p>Update XML Unit 2.8.0 &#8594; 2.8.2.</p>
</li>
<li>
<p>Update com.fasterxml.jackson.<strong>:</strong> 2.11.2 - 2.11.3.</p>
</li>
<li>
<p>Update commons-codec:commons-codec 1.14 &#8594; 1.15.</p>
</li>
<li>
<p>Update commons-io:commons-io 2.7 &#8594; 2.8.0.</p>
</li>
<li>
<p>Update de.flapdoodle.embed:de.flapdoodle.embed.mongo 2.2.0 &#8594; 3.0.0.</p>
</li>
<li>
<p>Update junit:junit 4.13 &#8594; 4.13.1.</p>
</li>
<li>
<p>Update mongodb4.version 4.1.1 &#8594; 4.2.0.</p>
</li>
<li>
<p>Update net.javacrumbs.json-unit:json-unit 1.31.1 &#8594; 2.22.0.</p>
</li>
<li>
<p>Update net.javacrumbs.json-unit:json-unit 2.22.0 &#8594; 2.23.0.</p>
</li>
<li>
<p>Update org.apache.activemq:* 5.16.0 &#8594; 5.16.1.</p>
</li>
<li>
<p>Update org.apache.commons:commons-dbcp2 2.4.0 &#8594; 2.8.0.</p>
</li>
<li>
<p>Update org.apache.commons:commons-lang3 3.10 &#8594; 3.11.</p>
</li>
<li>
<p>Update org.apache.commons:commons-pool2 2.8.1 &#8594; 2.9.0.</p>
</li>
<li>
<p>Update org.assertj:assertj-core 3.14.0 &#8594; 3.18.1.</p>
</li>
<li>
<p>Update org.assertj:assertj-core 3.18.1 &#8594; 3.19.0.</p>
</li>
<li>
<p>Update org.awaitility:awaitility 4.0.2 &#8594; 4.0.3.</p>
</li>
<li>
<p>Update org.codehaus.groovy:* 3.0.5 &#8594; 3.0.6.</p>
</li>
<li>
<p>Update org.codehaus.plexus:plexus-utils 3.2.0 &#8594; 3.3.0.</p>
</li>
<li>
<p>Update org.eclipse.tycho:org.eclipse.osgi 3.12.1.v20170821-1548 &#8594; 3.13.0.v20180226-1711.</p>
</li>
<li>
<p>Update org.fusesource.jansi:jansi 1.17.1 &#8594; 2.0.1.</p>
</li>
<li>
<p>Update org.fusesource.jansi:jansi 1.18 &#8594; 2.2.0.</p>
</li>
<li>
<p>Update org.fusesource.jansi:jansi 1.18 &#8594; 2.3.1.</p>
</li>
<li>
<p>Update org.mockito:mockito-* 3.7.0 &#8594; 3.7.7.</p>
</li>
<li>
<p>Update org.springframework:* 5.2.8.RELEASE &#8594; 5.3.1.</p>
</li>
<li>
<p>Update org.springframework:* 5.3.2 &#8594; 5.3.3.</p>
</li>
<li>
<p>Update org.xmlunit:* 2.7.0 &#8594; 2.8.0.</p>
</li>
<li>
<p>- com.fasterxml.jackson.core:jackson-annotations &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;.. 2.12.1 &#8594; 2.12.2 - com.fasterxml.jackson.core:jackson-core &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203; 2.12.1 &#8594; 2.12.2 - com.fasterxml.jackson.core:jackson-databind &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;.. 2.12.1 &#8594; 2.12.2 - com.fasterxml.jackson.dataformat:jackson-dataformat-xml &#8230;&#8203;&#8230;&#8203;.. 2.12.1 &#8594; 2.12.2 - com.fasterxml.jackson.dataformat:jackson-dataformat-yaml &#8230;&#8203;&#8230;&#8203;. 2.12.1 &#8594; 2.12.2 - com.fasterxml.jackson.module:jackson-module-jaxb-annotations &#8230;&#8203; 2.12.1 &#8594; 2.12.2 - org.apache.commons:commons-lang3 &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;. 3.11 &#8594; 3.12.0 - org.junit.jupiter:junit-jupiter-engine &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;. 5.7.0 &#8594; 5.7.1 - org.junit.jupiter:junit-jupiter-migrationsupport &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203; 5.7.0 &#8594; 5.7.1 - org.junit.jupiter:junit-jupiter-params &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;. 5.7.0 &#8594; 5.7.1 - org.junit.vintage:junit-vintage-engine &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;. 5.7.0 &#8594; 5.7.1 - org.mockito:mockito-core &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203; 3.7.7 &#8594; 3.8.0 - org.mockito:mockito-junit-jupiter &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203; 3.7.7 &#8594; 3.8.0 - org.mongodb:bson &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;.. 4.2.0 &#8594; 4.2.2 - org.mongodb:mongodb-driver-sync &#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;&#8230;&#8203;.. 4.2.0 &#8594; 4.2.2</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="release-notes-2-14-1-fixed">Fixed</h3>
<div class="ulist">
<ul>
<li>
<p>Allow auto-shutdown of log4j in log4j-web to be turned off and provide a ServletContextListener "Log4jShutdownOnContextDestroyedListener" to stop log4j. Register the listener at the top of web.xml to ensure the shutdown happens last. (<a href="https://issues.apache.org/jira/browse/LOG4J2-1606">LOG4J2-1606</a>)</p>
</li>
<li>
<p>Allow auto-shutdown of log4j in log4j-web to be turned off and provide a ServletContextListener "Log4jShutdownOnContextDestroyedListener" to stop log4j. Register the listener at the top of web.xml to ensure the shutdown happens last. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2624">LOG4J2-2624</a>)</p>
</li>
<li>
<p>Avoid redundant Kafka producer instantiation causing thread leaks. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2916">LOG4J2-2916</a>)</p>
</li>
<li>
<p>Document that LogBuilder default methods do nothing. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2947">LOG4J2-2947</a>)</p>
</li>
<li>
<p>Replace HashSet with IdentityHashMap in ParameterFormatter to detect cycles. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2948">LOG4J2-2948</a>)</p>
</li>
<li>
<p>Fix reading of JsonTemplateLayout event additional fields from config. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2961">LOG4J2-2961</a>)</p>
</li>
<li>
<p>Merge packages from several Configurations in Composite Configuration. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2964">LOG4J2-2964</a>)</p>
</li>
<li>
<p>Fix JsonTemplateLayout index based parameter resolution when messages contain too few parameters. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2967">LOG4J2-2967</a>)</p>
</li>
<li>
<p>Refactor AsyncAppender and AppenderControl for handling of Throwables. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2972">LOG4J2-2972</a>)</p>
</li>
<li>
<p>Rename EventTemplateAdditionalField#type (conflicting with properties file parser) to "format". (<a href="https://issues.apache.org/jira/browse/LOG4J2-2973">LOG4J2-2973</a>)</p>
</li>
<li>
<p>Log4j would fail to initialize in Java 8 with log4j-spring-boot. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2974">LOG4J2-2974</a>)</p>
</li>
<li>
<p>JdbcAppender composes an incorrect INSERT statement without a ColumnMapping element. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2976">LOG4J2-2976</a>)</p>
</li>
<li>
<p>OnStartupTriggeringPolicy would fail to cause the file to roll over with DirectWriteTriggeringPolicy unless minSize was set to 0. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2981">LOG4J2-2981</a>)</p>
</li>
<li>
<p>Add eventTemplateRootObjectKey parameter to JsonTemplateLayout. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2985">LOG4J2-2985</a>)</p>
</li>
<li>
<p>Reduce garbage by using putAll when copying the ThreadContext for SLF4J. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2990">LOG4J2-2990</a>)</p>
</li>
<li>
<p>Fix truncation of excessive strings ending with a high surrogate in JsonWriter. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2998">LOG4J2-2998</a>)</p>
</li>
<li>
<p>Directly create a thread instead of using the common ForkJoin pool when initializing ThreadContextDataInjector" (<a href="https://issues.apache.org/jira/browse/LOG4J2-3006">LOG4J2-3006</a>)</p>
</li>
<li>
<p>Log4j1ConfigurationConverter on Windows produces " " at end of every line. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3014">LOG4J2-3014</a>)</p>
</li>
<li>
<p>OutputStreamManager.flushBuffer always resets the buffer, previously the buffer was not reset after an exception. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3028">LOG4J2-3028</a>)</p>
</li>
<li>
<p>Add log method with no parameters - i.e. it has an empty message. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3033">LOG4J2-3033</a>)</p>
</li>
<li>
<p>Attempting to call getExtendedStackTraceAsString() after deserializing JSON LogEvent results in a NPE. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3131">LOG4J2-3131</a>)</p>
</li>
<li>
<p>NoGcLayout allocates empty bytes arrays for its header and footer. (<a href="https://issues.apache.org/jira/browse/LOG4J2-3131">LOG4J2-3131</a>)</p>
</li>
</ul>
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