[ https://issues.apache.org/jira/browse/MNG-8121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17847036#comment-17847036 ]
ASF GitHub Bot commented on MNG-8121: ------------------------------------- michael-o commented on PR #1508: URL: https://github.com/apache/maven/pull/1508#issuecomment-2115783498 > This is what I proposed in [bc03b17](https://github.com/apache/maven/commit/bc03b1762f6fab02985145e70bf6edd97102e2dc) (even together with test cases and this was declined by @michael-o back then in [#645 (comment)](https://github.com/apache/maven/pull/645#issuecomment-1001510028)). Can we please add some test cases? I must admit that I lost track completely... > NullPointerException at > org.apache.maven.artifact.repository.metadata.Metadata.merge > (Metadata.java:293) > -------------------------------------------------------------------------------------------------------- > > Key: MNG-8121 > URL: https://issues.apache.org/jira/browse/MNG-8121 > Project: Maven > Issue Type: Bug > Components: Artifacts and Repositories > Affects Versions: 3.9.6 > Environment: Maven 3.9.6 > maven-plugin-plugin 3.13.0 > org.sonatype.plugins:nexus-staging-maven-plugin:1.6.13 > Reporter: Gili > Assignee: Tamas Cservenak > Priority: Major > Fix For: 3.9.7, 4.0.0, 4.0.0-beta-3 > > > TL;DR {{org.apache.maven.artifact.repository.metadata.Metadata.merge > (Metadata.java:293)}} throws {{NullPointerException}} if previous releases of > a plugin did not have a goalPrefix set. > > At least, this is my interpretation of what is going on. > > Background > ------------- > > I have an open-source project at > [https://github.com/cmake-maven-project/cmake-maven-project/tree/v3.27.1-b1] > with the following coordinates: > > <groupId>com.googlecode.cmake-maven-project</groupId> > <artifactId>cmake</artifactId> > > If I upgrade "maven-plugin-plugin" from version 3.10.1 to 3.13.0 I am forced > to set "<goalPrefix>" because of > https://issues.apache.org/jira/browse/MPLUGIN-450 and > [https://github.com/apache/maven-plugin-tools/commit/ed4774bcd8b8d2d1f7ff1196cf7644054cb3ae14#diff-624cbd32cd7fc0f3f9154fbec92b8a1aebb04614360b4a0b5fc28a407e99d743L96] > > In my particular case, I set "<goalPrefix>cmake-binaries</goalPrefix>" inside > cmake-binaries-plugin/pom.xml. > Now, when I try deploying a release to Maven Central I get the following > exception stack trace: > > > {noformat} > java.lang.NullPointerException > at org.apache.maven.artifact.repository.metadata.Metadata.merge > (Metadata.java:293) > at > org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.updateRepositoryMetadata > (AbstractRepositoryMetadata.java:99) > at > org.apache.maven.artifact.repository.metadata.AbstractRepositoryMetadata.storeInLocalRepository > (AbstractRepositoryMetadata.java:59) > at org.apache.maven.artifact.repository.metadata.MetadataBridge.merge > (MetadataBridge.java:56) > at org.eclipse.aether.internal.impl.DefaultDeployer.upload > (DefaultDeployer.java:399) > at org.eclipse.aether.internal.impl.DefaultDeployer.deploy > (DefaultDeployer.java:294) > at org.eclipse.aether.internal.impl.DefaultDeployer.deploy > (DefaultDeployer.java:202) > at org.eclipse.aether.internal.impl.DefaultRepositorySystem.deploy > (DefaultRepositorySystem.java:393) > at org.apache.maven.artifact.deployer.DefaultArtifactDeployer.deploy > (DefaultArtifactDeployer.java:131) > at > org.sonatype.nexus.maven.staging.deploy.strategy.AbstractDeployStrategy.deployUp > (AbstractDeployStrategy.java:213) > at > org.sonatype.nexus.maven.staging.deploy.strategy.StagingDeployStrategy.finalizeDeploy > (StagingDeployStrategy.java:125) > at org.sonatype.nexus.maven.staging.deploy.DeployMojo.execute > (DeployMojo.java:213) > at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo > (DefaultBuildPluginManager.java:126){noformat} > > I assume that this is caused by {{preExisting.getPrefix()}} returning null, > but I have no idea why this is happening. Perhaps this is caused by previous > versions not have a goalPrefix set? Shouldn't the implementation handle this > possibility? -- This message was sent by Atlassian Jira (v8.20.10#820010)