A while back, a post made available a 3.4.0 SNAPSHOT build for testing. So I'm using it here and there.
To replicate the 3.4.0-S failure (works fine on 3.3.9): Download https://repository.apache.org/content/repositories/orgapachelogging-1020/org/apache/logging/log4j/log4j-distribution/2.6.2/log4j-distribution-2.6.2-src.zip (this link will be gone in a couple of days) Or checkout the tag with "git clone https://git-wip-us.apache.org/repos/asf/logging-log4j2.git" and then "git checkout tags/log4j-2.6.2-rc1” Using the src distro with 'mvn clean package' (Maven 3.4.0-SNAPSHOT), I am getting: Failed tests: XmlCompactFileAppenderTest.testFlushAtEndOfBatch:66 line1 incorrect: [<?xml version="1.0" encoding="UTF-8"?><Events xmlns=" http://logging.apache.org/log4j/2.0/events"></Events>], does not contain: [<Event ] XmlCompleteFileAppenderTest.testChildElementsAreCorrectlyIndented:139 line3 incorrect: [</Events>], must have two-space indentation XmlCompleteFileAppenderTest.testFlushAtEndOfBatch:74 line3 XmlFileAppenderTest.testFlushAtEndOfBatch:64 line1 Tests in error: MarkerMixInXmlTest>MarkerMixInTest.setUp:45 ╗ NoClassDefFound com/fasterxml/ja... MarkerMixInXmlTest>MarkerMixInTest.setUp:45 ╗ NoClassDefFound com/fasterxml/ja... MarkerMixInXmlTest>MarkerMixInTest.setUp:45 ╗ NoClassDefFound com/fasterxml/ja... ThrowableProxyTest.testIoContainerAsXml:95->testIoContainer:78 ╗ NoClassDefFound StackTraceElementMixInTest.testLog4jXmlObjectMapper:58->roundtrip:51 ╗ NoClassDefFound XmlLayoutTest.testLayout:214 ╗ NoClassDefFound com/fasterxml/jackson/module/ja... XmlLayoutTest.testLayoutLoggerName:262 ╗ NoClassDefFound com/fasterxml/jackson... XmlLayoutTest.testLocationOffCompactOffMdcOff:268->testAllFeatures:122 ╗ NoClassDefFound XmlLayoutTest.testLocationOnCompactOnMdcOn:273->testAllFeatures:122 ╗ NoClassDefFound org.apache.logging.log4j.core.net.server.SslXmlSocketServerTest.org.apache.logging.log4j.core.net.server.SslXmlSocketServerTest Run 1: SslXmlSocketServerTest.setupClass:64 ╗ NoClassDefFound com/fasterxml/jackson/m... Run 2: SslXmlSocketServerTest.tearDownClass:71 NullPointer org.apache.logging.log4j.core.net.server.TcpXmlSocketServerTest.org.apache.logging.log4j.core.net.server.TcpXmlSocketServerTest Run 1: TcpXmlSocketServerTest.setupClass:38 ╗ NoClassDefFound com/fasterxml/jackson/m... Run 2: TcpXmlSocketServerTest.tearDownClass:45 NullPointer org.apache.logging.log4j.core.net.server.UdpXmlSocketServerTest.org.apache.logging.log4j.core.net.server.UdpXmlSocketServerTest Run 1: UdpXmlSocketServerTest.setupClass:38 ╗ NoClassDefFound com/fasterxml/jackson/m... Run 2: UdpXmlSocketServerTest.tearDownClass:44 NullPointer Everything works fine with Maven 3.3.9. Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T08:41:47-08:00) Maven home: E:\Java\apache-maven-3.3.9 Java version: 1.8.0_91, vendor: Oracle Corporation Java home: C:\Program Files\Java\jdk1.8.0_91\jre Default locale: en_US, platform encoding: Cp1252 OS name: "windows 7", version: "6.1", arch: "amd64", family: "dos" Apache Maven 3.4.0-SNAPSHOT (644ac9c40ad41bf61e3b099918af33b8eb950621; 2016-06-11T12:17:57-07:00) Maven home: E:\Java\apache-maven-3.4.0-SNAPSHOT\bin\.. Java version: 1.8.0_91, vendor: Oracle Corporation Java home: C:\Program Files\Java\jdk1.8.0_91\jre Default locale: en_US, platform encoding: Cp1252 OS name: "Windows 7", version: "6.1", arch: "amd64", family: "Windows" Thank you Gary (Apache Logging PMC) -- E-Mail: garydgreg...@gmail.com | ggreg...@apache.org Java Persistence with Hibernate, Second Edition <http://www.manning.com/bauer3/> JUnit in Action, Second Edition <http://www.manning.com/tahchiev/> Spring Batch in Action <http://www.manning.com/templier/> Blog: http://garygregory.wordpress.com Home: http://garygregory.com/ Tweet! http://twitter.com/GaryGregory