| --- |
| layout: post |
| title: "Apache Maven 3.6.1 Released" |
| date: '2019-04-13T11:08:32+00:00' |
| permalink: apache-maven-3-6-1 |
| categories: |
| - Maven-Core-Releases |
| --- |
| The Apache Maven team is pleased to announce the release of the Apache |
| Maven 3.6.1. |
| |
| Apache Maven is a software project management and comprehension tool. Based |
| on the concept of a project object model (POM), Maven can manage a |
| project's build, reporting and documentation from a central piece of |
| information. |
| |
| You can find out more about Apache Maven at https://maven.apache.org |
| |
| You can download the appropriate sources etc. from |
| the [download page](https://maven.apache.org/download.cgi) |
| |
| <!-- more --> |
| |
| We really value the contributions of these non committers, so this section is |
| focused on those individuals. Descriptions of the issues fixed can be found at |
| the [end of these release notes](#Details). |
| |
| Issue Reporters of this release: |
| |
| * [MNG-5705] Ondra Žižka |
| * [MNG-5965] Matthias Schmalz |
| * [MNG-6059] Andreas Sewe |
| * [MNG-6159] Christian Aistleitner |
| * [MNG-6213] Jin Kwon |
| * [MNG-6256] Christoph Etzel |
| * [MNG-6261] Dawid Weiss |
| * [MNG-6262] Gene Smith |
| * [MNG-6346] Patrik Jetzer |
| * [MNG-6374] Rohan Padhye |
| * [MNG-6495] Elliotte Rusty Harold |
| * [MNG-6506] Andreas Veithen |
| * [MNG-6526] Olaf Otto |
| * [MNG-6529] Michael Istria |
| * [MNG-6530] Michael Istria |
| * [MNG-6533] Michael Istria |
| * [MNG-6543] Romain Manni-Bucau |
| * [MNG-6558] Guy Brand |
| * [MNG-6577] Rohan Padhye |
| * [MNG-6591] Olaf Otto |
| * [MNG-6605] Gunnar Wagenknecht |
| * [MNG-6618] Viacheslav Yakunin |
| |
| Code Contributors of this release: |
| |
| * [MNG-6374] Gabriel Belingueres (indirectly via plexus-utils PR) |
| * [MNG-6529] Michael Istria |
| * [MNG-6530] Michael Istria |
| * [MNG-6558] Guy Brand |
| * [MNG-6261] Fabiano C. de Oliveira |
| * [MNG-6533] Michael Istria |
| |
| |
| Many thanks to all reporters and contributors for their time and support. |
| |
| (Please send an email to the dev list if we missed one to mention). |
| |
| ## Preliminary Testers |
| |
| Thanks to the following preliminary testers: |
| |
| * Gabriel Belingueres |
| * Francois Papon |
| * Eric Lilja |
| |
| ## Known Issues |
| |
| If you are using Maven reporting, it might happen that you will get an exception which looks like this: |
| |
| ``` |
| [INFO] Scanning for projects... |
| [ERROR] Internal error: java.lang.NullPointerException -> [Help 1] |
| org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException |
| at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120) |
| ... |
| Caused by: java.lang.NullPointerException |
| at org.apache.maven.model.plugin.DefaultReportingConverter.convert (DefaultReportingConverter.java:243) |
| ... |
| ``` |
| |
| This is caused by using a `<reportSet>..</reportSet>` which does not contain |
| a `<report></report>` element. |
| |
| Temporarily this issue can circumvent by adding an empty `<report></report>` element |
| inside the `<reportSet></reportSet>`. |
| |
| An [issue has been created][MNG-6636] to track the fix. |
| |
| [MNG-6636]: https://issues.apache.org/jira/browse/MNG-6636 |
| |
| ## Overview about the changes |
| |
| - An issue has been fixed causing multiple executions of plugin goals, related to |
| using parallel build options like `mvn plugin:goal -T 4`. This resulted in duplicated |
| executions of phases. This has been fixed with [MNG-5965]. |
| |
| - NullPointerException related to call in parallel build like `mvn -T 1C clean javadoc:aggregate` |
| [MNG-5705] |
| |
| - A performance issue related to artifact transfer has been found related to [WAGON-537]. It |
| has been solved via the update to [Maven Wagon 3.3.1][MNG-6526]. |
| |
| - There had been issues related calling Maven script like this: `mvn -f ..` |
| - Having parentheses within the path, which has been fixed with [MNG-6346]. |
| - Script can break having special characters as part of the path, which has |
| been solved with [MNG-6256]. |
| |
| |
| - Issue related to the Maven Resolver API which broke some IDEs (for example https://youtrack.jetbrains.com/issue/IDEA-201282); |
| this has been fixed by [MNG-6538]. |
| |
| - Issue related to missing event for ToolchainsBuildingResult on EventSpy [MNG-6558]. |
| |
| - Issue related to support Java 9+ `ClassLoader.findClass(String moduleName, String name)` in Mojos. |
| This has been fixed with [MNG-6543]. |
| |
| - Improvement about the memory consumption has been done with [MNG-6571]. |
| |
| - Issue related to relative parent POM resolution failing in 3.5.0 with complex multimodule builds |
| has been fixed with [MNG-6261]. |
| |
| - Missing export for org.slf4j.event.Level has been done with [MNG-6618] |
| |
| |
| ## User visible Changes |
| |
| Maven has now a an option to suppress the transfer progress when downloading/uploading |
| in interactive mode. |
| |
| ``` |
| mvn --no-transfer-progress .... |
| ``` |
| or in short: |
| |
| ``` |
| mvn -ntp ... .... |
| ``` |
| |
| There had been an issues like [MNG-6505] and [MNG-6059] related to the construction of |
| URL's etc. within `distributionManagement` and `scm` part in the pom for multi module |
| builds like this: |
| |
| |
| ``` |
| <scm child.scm.connection.inherit.append.path="true" |
| child.scm.developerConnection.inherit.append.path="true" |
| child.scm.url.inherit.append.path="true" /> |
| <distributionManagement> |
| <site child.site.url.inherit.append.path="true" /> |
| </distributionManagement> |
| ``` |
| |
| Detailed explanations can be found in [Inheritance Assembly][inheritance-assembly] and in [MNG-6059] |
| |
| |
| [inheritance-assembly]: https://maven.apache.org/ref/3.6.1/maven-model-builder/index.html#Inheritance_Assembly |
| |
| ## The detailed issue list[](#Details) |
| |
| ### Bugs: |
| |
| - [MNG-5705](https://issues.apache.org/jira/browse/MNG-5705) - NPE on parallel build in BuilderCommon.handleBuildError(BuilderCommon.java:147) |
| - [MNG-5965](https://issues.apache.org/jira/browse/MNG-5965) - Parallel build multiplies work if multiple goals are given |
| - [MNG-5995](https://issues.apache.org/jira/browse/MNG-5995) - Maven itself cannot run without maven-compat |
| - [MNG-6256](https://issues.apache.org/jira/browse/MNG-6256) - Maven script can break if "-f" path contains special characters |
| - [MNG-6261](https://issues.apache.org/jira/browse/MNG-6261) - Relative parent POM resolution failing in 3.5.0 with complex multimodule builds |
| - [MNG-6262](https://issues.apache.org/jira/browse/MNG-6262) - getCanonicalFile() is not used consistently during project resolution |
| - [MNG-6346](https://issues.apache.org/jira/browse/MNG-6346) - ... was unexpected at this time when using -f option and path contains brackets |
| - [MNG-6374](https://issues.apache.org/jira/browse/MNG-6374) - ModelBuilder hangs with malformed pom.xml |
| - [MNG-6429](https://issues.apache.org/jira/browse/MNG-6429) - Integration Test site publishing requires Java 7 (or javadoc errors ignored) |
| - [MNG-6495](https://issues.apache.org/jira/browse/MNG-6495) - ModelResolver cannot be null |
| - [MNG-6505](https://issues.apache.org/jira/browse/MNG-6505) - child.(x.y).inherit.append.path value should be inherited |
| - [MNG-6506](https://issues.apache.org/jira/browse/MNG-6506) - Mojos are unable to load package annotations on Java >= 9 |
| - [MNG-6529](https://issues.apache.org/jira/browse/MNG-6529) - `ProjectBuilder.build(List<File> projects, boolean, ProjectBuildingRequest)` doesn't honor `ProjectBuildingRequest.isResolveDependencies()` |
| - [MNG-6530](https://issues.apache.org/jira/browse/MNG-6530) - Regression in ProjectBuilder when file change between invocations (introduced by MNG-6311) |
| - [MNG-6533](https://issues.apache.org/jira/browse/MNG-6533) - `ProjectBuilder.build(list_of_projects,...)` does not contain MavenProject in exception report |
| - [MNG-6543](https://issues.apache.org/jira/browse/MNG-6543) - Upgrade plexus classworld to support java 9+ `ClassLoader.findClass(String moduleName, String name)` in Mojos |
| - [MNG-6558](https://issues.apache.org/jira/browse/MNG-6558) - ToolchainsBuildingResult event is not sent on EventSpy |
| - [MNG-6577](https://issues.apache.org/jira/browse/MNG-6577) - pom.xml: Uncaught IllegalArgumentException when parsing unicode entity ref |
| - [MNG-6590](https://issues.apache.org/jira/browse/MNG-6590) - DefaultProjectArtifactsCache java.lang.IllegalStateException: Duplicate artifact resolution result |
| - [MNG-6599](https://issues.apache.org/jira/browse/MNG-6599) - unknown version in model id when version is defined from parent |
| |
| ### Improvements |
| |
| - [MNG-6059](https://issues.apache.org/jira/browse/MNG-6059) - Important use cases not covered, as child.inherit.append.path affects all children |
| - [MNG-6159](https://issues.apache.org/jira/browse/MNG-6159) - Child path adjustments break git scm urls |
| - [MNG-6213](https://issues.apache.org/jira/browse/MNG-6213) - Maven doesn't check the validity of scope value |
| - [MNG-6481](https://issues.apache.org/jira/browse/MNG-6481) - Allow to compile and test Maven with Java 11 |
| - [MNG-6513](https://issues.apache.org/jira/browse/MNG-6513) - Replace depreated Plexus javadoc tags with annotations in ITs |
| - [MNG-6515](https://issues.apache.org/jira/browse/MNG-6515) - Fix javadoc build errors under Java 8 and 11 |
| - [MNG-6520](https://issues.apache.org/jira/browse/MNG-6520) - Update assembly descriptors to 2.0.0 |
| - [MNG-6522](https://issues.apache.org/jira/browse/MNG-6522) - Prepare Maven's Core Integration Test Suite to test with Java 12 and 13-ea |
| - [MNG-6572](https://issues.apache.org/jira/browse/MNG-6572) - use int or long instead of BigIntegers for little numbers in ComparableVersion |
| - [MNG-6593](https://issues.apache.org/jira/browse/MNG-6593) - track input location for super-pom |
| - [MNG-6597](https://issues.apache.org/jira/browse/MNG-6597) - add input location tracking for plugins configuration |
| - [MNG-6600](https://issues.apache.org/jira/browse/MNG-6600) - add input location tracking for default lifecycle bindings executions |
| - [MNG-6601](https://issues.apache.org/jira/browse/MNG-6601) - add input location tracking for site's reportPlugins injected by reports conversion |
| - [MNG-6605](https://issues.apache.org/jira/browse/MNG-6605) - Allow to suppress download messages in interactive mode |
| - [MNG-6611](https://issues.apache.org/jira/browse/MNG-6611) - Update animal-sniffer-maven-plugin to 1.17 |
| |
| ### Wish |
| |
| - [MNG-6571](https://issues.apache.org/jira/browse/MNG-6571) - Maven memory consumption issue |
| |
| ### Task |
| |
| - [MNG-6538](https://issues.apache.org/jira/browse/MNG-6538) - Upgrade Maven Artifact Resolver to 1.3.3 to restore API |
| - [MNG-6544](https://issues.apache.org/jira/browse/MNG-6544) - Replace CacheUtils#{eq,hash} with Objects |
| - [MNG-6573](https://issues.apache.org/jira/browse/MNG-6573) - Use latest Maven 3.6.0 to build Maven Core and plugins with ASF CI |
| - [MNG-6618](https://issues.apache.org/jira/browse/MNG-6618) - Maven doesn't export org.slf4j.event.Level |
| |
| ### Dependency upgrade |
| |
| - [MNG-6526](https://issues.apache.org/jira/browse/MNG-6526) - Upgrade to Wagon 3.3.1 (from 3.2.0) |
| - [MNG-6591](https://issues.apache.org/jira/browse/MNG-6591) - Upgrade to Wagon 3.3.2 |
| |
| |
| The full list of changes can be found in our [issue management system][4]. |
| |
| ## Complete Release Notes |
| |
| See [complete release notes for all versions][5] |
| |
| - The Apache Maven Team. |
| |
| |
| [0]: ../../download.html |
| [1]: ../../plugins/index.html |
| [2]: https://maven.apache.org/ |
| [4]: https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12344378&projectId=12316922 |
| [5]: ../../docs/history.html |
| [MNG-5705]: https://issues.apache.org/jira/browse/MNG-5705 |
| [MNG-5965]: https://issues.apache.org/jira/browse/MNG-5965 |
| [MNG-5995]: https://issues.apache.org/jira/browse/MNG-5995 |
| [MNG-6256]: https://issues.apache.org/jira/browse/MNG-6256 |
| [MNG-6261]: https://issues.apache.org/jira/browse/MNG-6261 |
| [MNG-6262]: https://issues.apache.org/jira/browse/MNG-6262 |
| [MNG-6346]: https://issues.apache.org/jira/browse/MNG-6346 |
| [MNG-6374]: https://issues.apache.org/jira/browse/MNG-6374 |
| [MNG-6429]: https://issues.apache.org/jira/browse/MNG-6429 |
| [MNG-6495]: https://issues.apache.org/jira/browse/MNG-6495 |
| [MNG-6505]: https://issues.apache.org/jira/browse/MNG-6505 |
| [MNG-6506]: https://issues.apache.org/jira/browse/MNG-6506 |
| [MNG-6529]: https://issues.apache.org/jira/browse/MNG-6529 |
| [MNG-6530]: https://issues.apache.org/jira/browse/MNG-6530 |
| [MNG-6533]: https://issues.apache.org/jira/browse/MNG-6533 |
| [MNG-6543]: https://issues.apache.org/jira/browse/MNG-6543 |
| [MNG-6558]: https://issues.apache.org/jira/browse/MNG-6558 |
| [MNG-6577]: https://issues.apache.org/jira/browse/MNG-6577 |
| [MNG-6590]: https://issues.apache.org/jira/browse/MNG-6590 |
| [MNG-6599]: https://issues.apache.org/jira/browse/MNG-6599 |
| [MNG-6059]: https://issues.apache.org/jira/browse/MNG-6059 |
| [MNG-6159]: https://issues.apache.org/jira/browse/MNG-6159 |
| [MNG-6213]: https://issues.apache.org/jira/browse/MNG-6213 |
| [MNG-6481]: https://issues.apache.org/jira/browse/MNG-6481 |
| [MNG-6513]: https://issues.apache.org/jira/browse/MNG-6513 |
| [MNG-6515]: https://issues.apache.org/jira/browse/MNG-6515 |
| [MNG-6520]: https://issues.apache.org/jira/browse/MNG-6520 |
| [MNG-6522]: https://issues.apache.org/jira/browse/MNG-6522 |
| [MNG-6572]: https://issues.apache.org/jira/browse/MNG-6572 |
| [MNG-6593]: https://issues.apache.org/jira/browse/MNG-6593 |
| [MNG-6597]: https://issues.apache.org/jira/browse/MNG-6597 |
| [MNG-6600]: https://issues.apache.org/jira/browse/MNG-6600 |
| [MNG-6601]: https://issues.apache.org/jira/browse/MNG-6601 |
| [MNG-6605]: https://issues.apache.org/jira/browse/MNG-6605 |
| [MNG-6611]: https://issues.apache.org/jira/browse/MNG-6611 |
| [MNG-6571]: https://issues.apache.org/jira/browse/MNG-6571 |
| [MNG-6538]: https://issues.apache.org/jira/browse/MNG-6538 |
| [MNG-6544]: https://issues.apache.org/jira/browse/MNG-6544 |
| [MNG-6573]: https://issues.apache.org/jira/browse/MNG-6573 |
| [MNG-6618]: https://issues.apache.org/jira/browse/MNG-6618 |
| [MNG-6526]: https://issues.apache.org/jira/browse/MNG-6526 |
| [MNG-6591]: https://issues.apache.org/jira/browse/MNG-6591 |
| |
| [WAGON-537]: https://issues.apache.org/jira/browse/WAGON-537 |
