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| <div class="sect1"> |
| <h2 id="release-notes-2-13-0">2.13.0</h2> |
| <div class="sectionbody"> |
| <div class="dlist"> |
| <dl> |
| <dt class="hdlist1">Release date</dt> |
| <dd> |
| <p>2019-12-11</p> |
| </dd> |
| </dl> |
| </div> |
| <div class="paragraph"> |
| <p>This release contains bugfixes and minor enhancements. |
| Some of the new features in this release are:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Log4j 2 now requires Java 8 or higher to build and run.</p> |
| </li> |
| <li> |
| <p>Experimental support for Log4j 1 configuration files. |
| See Log4j 2 Compatiblity with Log4j 1.</p> |
| </li> |
| <li> |
| <p>The Logger API has been enhanced to support a builder pattern. |
| This can dramatically improve the overhead of capturing location information. |
| See Log Builder.</p> |
| </li> |
| <li> |
| <p>Better integration with Spring Boot by providing access to Spring variables in Log4j 2 configuration files and allowing Log4j 2 system properties to be defined in the Spring configuration. |
| See Logging in the Cloud.</p> |
| </li> |
| <li> |
| <p>Support for accessing Kubernetes information via a Log4j 2 Lookup.</p> |
| </li> |
| <li> |
| <p>The Gelf Layout now allows the message to be formatted using a <code>PatternLayout</code> pattern. |
| Logging in the Cloud provides an example of this, as well as the use of the Spring and Kubernetes Lookups.</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.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Note that the XML, JSON and YAML formats changed in the 2.11.0 release: they no longer have the <code>timeMillis</code> attribute and instead have an <code>Instant</code> element with <code>epochSecond</code> and <code>nanoOfSecond</code> attributes.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The Log4j 2.13.0 API, as well as many core components, maintains binary compatibility with previous releases.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Log4j 2.13.0 requires a minimum of Java 8 to build and run. |
| Log4j 2.3 was the last release that supported Java 6 and Log4j 2.11.2 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-2-13-0-added">Added</h3> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Add builder pattern to Logger interface. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2639">LOG4J2-2639</a>)</p> |
| </li> |
| <li> |
| <p>Allow Spring Boot application properties to be accessed in the Log4j 2 configuration. Add lower and upper case Lookups. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2710">LOG4J2-2710</a>)</p> |
| </li> |
| <li> |
| <p>Add the ability to lookup Kubernetes attributes in the Log4j configuration. Allow Log4j properties to be retrieved from the Spring environment if it is available. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2716">LOG4J2-2716</a>)</p> |
| </li> |
| <li> |
| <p>Add a Level Pattern Selector. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2731">LOG4J2-2731</a>)</p> |
| </li> |
| <li> |
| <p>Add ThreadContext.putIfNotNull method. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2732">LOG4J2-2732</a>)</p> |
| </li> |
| <li> |
| <p>Add experimental support for Log4j 1 configuration files. (<a href="https://issues.apache.org/jira/browse/LOG4J2-63">LOG4J2-63</a>)</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="release-notes-2-13-0-changed">Changed</h3> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Update Jackson to 2.9.10. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2701">LOG4J2-2701</a>)</p> |
| </li> |
| <li> |
| <p>Allow message portion of GELF layout to be formatted using a PatternLayout. Allow ThreadContext attributes to be explicitly included or excluded in the GelfLayout. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2709">LOG4J2-2709</a>)</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="release-notes-2-13-0-fixed">Fixed</h3> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>Prevent recursive calls to java.util.LogManager.getLogger(). (<a href="https://issues.apache.org/jira/browse/LOG4J2-2058">LOG4J2-2058</a>)</p> |
| </li> |
| <li> |
| <p>Wrong java version check in ThreadNameCachingStrategy. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2635">LOG4J2-2635</a>)</p> |
| </li> |
| <li> |
| <p>Validation blocks definition of script in properties configuration. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2647">LOG4J2-2647</a>)</p> |
| </li> |
| <li> |
| <p>Add automatic module names where missing. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2672">LOG4J2-2672</a>)</p> |
| </li> |
| <li> |
| <p>OutputStreamAppender.Builder ignores setFilter(). (<a href="https://issues.apache.org/jira/browse/LOG4J2-2673">LOG4J2-2673</a>)</p> |
| </li> |
| <li> |
| <p>Use a less confusing name for the CompositeConfiguration source. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2674">LOG4J2-2674</a>)</p> |
| </li> |
| <li> |
| <p>Set result of rename action to true if file was copied. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2680">LOG4J2-2680</a>)</p> |
| </li> |
| <li> |
| <p>@PluginValue does not support attribute names besides "value". (<a href="https://issues.apache.org/jira/browse/LOG4J2-2693">LOG4J2-2693</a>)</p> |
| </li> |
| <li> |
| <p>ArrayIndexOutOfBoundsException could occur with MAC address longer than 6 bytes. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2707">LOG4J2-2707</a>)</p> |
| </li> |
| <li> |
| <p>The rolling file appenders would fail to compress the file after rollover if the file name matched the file pattern. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2712">LOG4J2-2712</a>)</p> |
| </li> |
| <li> |
| <p>LOG4J2-2725 - Added try/finally around event.execute() for RingBufferLogEventHandler to clear memory correctly in case of exception/error (<a href="https://issues.apache.org/jira/browse/LOG4J2-2725">LOG4J2-2725</a>)</p> |
| </li> |
| <li> |
| <p>Prevent a memory leak when async loggers throw errors. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2725">LOG4J2-2725</a>)</p> |
| </li> |
| <li> |
| <p>Add setKey method to Kafka Appender Builder. (<a href="https://issues.apache.org/jira/browse/LOG4J2-2727">LOG4J2-2727</a>)</p> |
| </li> |
| </ul> |
| </div> |
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