I got hit at work with the loss of log4j-jmx-gui. Is log4j-jmx-gui 2.20.0
compatible with log4j 2.21.0?

Gary


On Mon, Oct 16, 2023, 5:59 PM Gary Gregory <garydgreg...@gmail.com> wrote:

> Thank you for RM'ing Christian!
>
> Gary
>
>
>
> On Mon, Oct 16, 2023, 4:28 PM Christian Grobmeier <grobme...@apache.org>
> wrote:
>
>> Apache Log4j team is pleased to announce the 2.21.0
>> release. Apache Log4j is a versatile, industrial-strength
>> Java logging framework composed of an API, its implementation,
>> and components to assist the deployment for various use cases.
>> For further information (support, download, etc.) see the project
>> website[1].
>>
>> [1] https://logging.apache.org/log4j
>>
>> == Release Notes
>>
>> This release primarily focuses on enhancements to our OSGi and JPMS
>> support and contains several bug fixes.
>> It will be the first release built and signed by the CI using the
>> https://keyserver.ubuntu.com/pks/lookup?search=077E8893A6DCC33DD4A4D5B256E73BA9A0B592D0&op=index[ASF
>> Logging Services Release Manager GPG key], which is shared in
>> https://www.apache.org/dist/logging/KEYS[KEYS].
>>
>> The Log4j 2.21.0 API, as well as the other artifacts, maintains binary
>> compatibility with the previous release.
>>
>> Apache Log4j 2.21.0 requires Java 8 to run.
>> The build requires JDK 11 and generates reproducible binaries.
>>
>> For complete information on Apache Log4j 2, including instructions on how
>> to submit bug reports, patches, get support, or suggestions for
>> improvement, see http://logging.apache.org/log4j/2.x/[the Apache Log4j 2
>> website].
>>
>> === OSGi changes
>>
>> All the published artifacts are OSGi bundles or fragments.
>>
>> This release introduces a change in the bundle symbolic names to allow
>> them to function as JPMS module name: all hyphens `-` present in the bundle
>> names of previous releases were replaced by dots `.`.
>>
>> === JPMS changes
>>
>> All the published artifacts have been migrated from automatic modules to
>> named JPMS modules.
>> All packages marked as private in the Javadoc are not exported.
>>
>> The module name of four bridges (`log4j-slf4j-impl`, `log4j-slf4j2-impl`,
>> `log4j-to-jul` and `log4j-to-slf4j`) have been changed to adhere to the
>> same convention as the OSGi bundle names.
>>
>> === Added
>>
>> * Added marker parent support to `JsonTemplateLayout` (#1381)
>> * Added https://facebook.github.io/zstd/[ZStandard compression] support
>> (#1508, #1514)
>> * Added a warning for incorrect syntax of highlighting styles (#1545,
>> #1637)
>>
>> === Changed
>>
>> * Open `FileExtension` methods to allow their usage in custom
>> ``RolloverStrategy``s (#1365, #1683)
>> * Bumped the minimum Java version required for the build to JDK 11.
>> Runtime requirements remain unchanged. (#1369)
>> * Set the default `minLevel` and `maxLevel` of `LevelRangeFilter` to
>> `OFF` and `ALL`, respectively (#1503)
>> * Removed additional `isFiltered` checks in `AsyncLoggerConfig` (#1550)
>> * Use Java version-specific warnings in `StackLocator` (#1760)
>> * Started logging a status error event instead of an NPE in
>> `OsgiServiceLocator.loadServices(Class, Lookup, boolean)` when a bundle has
>> no valid `BundleContext` for a service type
>> * Implemented a CI-based release process
>> * Update Eclipse Angus Activation to version
>> https://github.com/eclipse-ee4j/angus-activation/releases/tag/2.0.1[2.0.1]
>> (#1591)
>> * Update Eclipse Angus Mail to version
>> https://github.com/eclipse-ee4j/angus-mail/releases/tag/2.0.2[2.0.2]
>> (#1591)
>> * Update `com.datastax.cassandra:cassandra-driver-core` to version 3.11.5
>> (#1591)
>> * Update Apache Cassandra to version
>> https://github.com/apache/cassandra/blob/cassandra-3.11/CHANGES.txt[3.11.16]
>> (#1591)
>> * Update Apache Commons Compress to version
>> https://commons.apache.org/proper/commons-compress/changes-report.html#a1.24.0[1.24.0]
>> (#1591)
>> * Update Apache Commons CSV to version
>> https://commons.apache.org/proper/commons-csv/changes-report.html#a1.10.0[1.10.0]
>> (#1591)
>> * Update Jackson to version
>> https://github.com/FasterXML/jackson/wiki/Jackson-Release-2.15.2[2.15.2]
>> (#1591)
>> * Update Jakarta Activation API to version
>> https://jakarta.ee/specifications/activation/2.1/changelog/[2.1.2]
>> (#1591)
>> * Update Jakarta Mail API to version
>> https://jakarta.ee/specifications/mail/2.1/changelog/[2.1.2] (#1591)
>> * Update JCTools to version
>> https://github.com/JCTools/JCTools/blob/master/RELEASE-NOTES.md[4.0.1]
>> (#1591)
>> * Update Apache Kafka to version
>> https://archive.apache.org/dist/kafka/3.4.0/RELEASE_NOTES.html[3.4.0]
>> (#1591)
>> * Update Kubernetes client to version
>> https://github.com/fabric8io/kubernetes-client/releases?q=5.12.4[5.12.4]
>> (#1591)
>> * Update `org.mongodb:mongodb-driver-core` to version 4.10.2 (#1591)
>> * Update `io.netty:netty-bom` to version 4.1.97 (#1591)
>> * Update Spring Boot to version
>> https://github.com/spring-projects/spring-boot/releases/tag/v2.7.15[2.7.15]
>> (#1591)
>> * Update Spring Framework to version
>> https://github.com/spring-projects/spring-framework/releases/tag/v5.3.29[5.3.29]
>> (#1591)
>> * Update Tomcat JULI to version 10.0.27 (#1591)
>> * Update Woodstox to version
>> https://github.com/FasterXML/woodstox/blob/master/release-notes/VERSION[6.5.1]
>> (#1591)
>>
>> === Removed
>>
>> * Moved `log4j-jmx-gui` to
>> https://github.com/apache/logging-log4j-jmx-gui/actions[its own
>> repository] along with its own release cycle
>>
>> === Fixed
>>
>> * Added validation to rolling file manager path conditions (#1231)
>> * Adapted the OSGi metadata of `log4j-to-slf4j` to work with SLF4J 1 and
>> 2. To achieve that used a version range of `[1.7,3)` for the imported SLF4J
>> packages. (#1232)
>> * Fixed Javadoc failures (#1275, #1753)
>> * Removed locale-dependent `toLowerCase/toUpperCase` calls (#1281)
>> * Redirected old `/<module>/apidocs` URLs (broken in 2.20.0) to
>> `/javadoc/<module>` (#1284)
>> * Added environment variable arbiter (#1312)
>> * Fixed logging of `java.sql.Date` objects by appending it before Log4J
>> tries to call `java.util.Date.toInstant()` on it (#1366)
>> * Adapted the OSGi metadata of `log4j-api`, `log4j-core`,
>> `log4j-slf4j-impl` and `log4j-slf4j2-impl` to activate the bundle when it
>> is accessed. To achieve that set the `Bundle-ActivationPolicy` to `lazy`
>> for the log4j bundles. (#1367)
>> * Avoided using released objects in `StackTraceStringResolver` of
>> `JsonTemplateLayout` (#1380)
>> * Added missing setter for `connectionStringSource` in `MongoDb4Provider`
>> builder (#1389)
>> * Fixed NPE in `PluginElementVisitor` (#1391)
>> * Added `columnType` as alias for the column mapping `type` attribute
>> (#1405)
>> * Restored `Log4jMarker` visibility in SLF4J adapters (#1414)
>> * Fixed buffer size in `Log4jFixedFormatter` date time formatter (#1418)
>> * Fixed the propagation of synchronous action failures in
>> `RollingFileManager` and `FileRenameAction` (#1445, #1549)
>> * Fixed `RollingFileManager` to propagate failed synchronous actions
>> correctly (#1445)
>> * Replaced the usage of `System.out` in `StackLocator` for warnings with
>> `System.err` (#1484)
>> * Fixed concurrent date-time formatting issue in `PatternLayout` (#1485)
>> * Fixed runtime dependencies documentation (#1530)
>> * Allowed to override FQCN in `Log4jEventBuilder` by implementing
>> `CallerBoundaryAware` (#1533)
>> * Migrated MongoDB tests to JUnit 5 and Flapdoodle Embedded MongoDB 4
>> (#1589)
>> * Rewrote message parameter formatter with improved escape handling
>> (#1626)
>> * Improved formatting and serialization of `StackTraceElement` on JDK 9+
>> (#1640)
>> * Fixed `MemoryMappedFileAppender` buffer unmapping on JRE 9+ (#1646)
>> * Fixed rollover strategy in the Log4j 1.x compatibility layer (#1650)
>> * Removed incorrect mention of `base64` lookup and improve the rest of
>> the lookup manual (#1681,
>> https://issues.apache.org/jira/browse/LOG4J2-3504[LOG4J2-3504])
>> * Implemented `LocationAware` for `JsonTemplateLayout`, since this was
>> causing location not being passed to underlying appenders (#1692)
>> * Added support for `long` values in MongoDb 4 appender to configure
>> `collectionSize` (#1747)
>> * Only shutdown Log4j after last `Log4jServletContextListener` is
>> executed (#1782)
>> * Allowed using Spring Arbiter without a Spring environment (#1783)
>> * Fixed context data loss if `<AsyncLogger>` components are used with an
>> all async logger context (#1786)
>> * Fixed `JsonTemplateLayout` NPE thrown on custom log levels (#1805)
>> * Improved `Log4j-config.xsd` schema (
>> https://issues.apache.org/jira/browse/LOG4J2-170[LOG4J2-170])
>> * Fixed NPE in `ContextSelector` (
>> https://issues.apache.org/jira/browse/LOG4J2-3217[LOG4J2-3217], #1538)
>> * Avoided allocating ``ThreadLocal``s in `AbstractLogger` when they are
>> disabled, since this was causing memory leaks due to retained reference to
>> class loaders in web applications (
>> https://issues.apache.org/jira/browse/LOG4J2-3657[LOG4J2-3657])
>> * Fixed `%notEmpty` directive of `PatternLayout` for empty MDC/NDC inputs
>> (https://issues.apache.org/jira/browse/LOG4J2-3660[LOG4J2-3660])
>> * Fixed file descriptor leak on Tomcat (
>> https://issues.apache.org/jira/browse/LOG4J2-3663[LOG4J2-3663])
>> * Ensured `FileOutputStream` is closed in
>> `CommonsCompressAction.execute()`
>>
>>

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