{"id":285,"date":"2026-10-13T08:41:37","date_gmt":"2026-10-13T08:41:37","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/2010\/09\/21\/apache-maven-30-rc1\/"},"modified":"2026-10-13T08:41:37","modified_gmt":"2026-10-13T08:41:37","slug":"apache-maven-30-rc1","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/apache-maven-30-rc1\/","title":{"rendered":"Apache Maven 3.0-RC1 Pre-Release Testing: Practical Regression Checks for Maven 2.x Teams"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Apache Maven 3.0-RC1 was a <em>release candidate<\/em> announced for community testing before final release. This guide helps DevOps and build engineers run focused regression tests against Maven 2.x, compare outcomes, and report issues with enough detail for maintainers to reproduce.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Originally published on 2010-09-21; fully revised and updated.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.devopsschool.com\/blog\/wp-content\/uploads\/2010\/09\/apache-maven.png\" alt=\"Apache Maven 3.0 release candidate testing\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What the original pre-release request asked testers to do<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Maven team asked the community to test Maven 3.0-RC1 and identify regressions compared with Maven 2.x. The expected contribution was to run real builds, capture unexpected behavior, and submit reproducible reports.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before filing issues, testers were asked to review Maven 3.x compatibility guidance: <a href=\"https:\/\/cwiki.apache.org\/confluence\/display\/MAVEN\/Maven+3.x+Compatibility+Notes\">https:\/\/cwiki.apache.org\/confluence\/display\/MAVEN\/Maven+3.x+Compatibility+Notes<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The original note also mentioned that fixes since the 3.0-beta-3 release could be reviewed in JIRA.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pre-release regression testing workflow<\/h2>\n\n\n\n<pre class=\"mermaid\">\nflowchart TD\n    A[Select a Maven 2.x project] --> B[Read Maven 3.x compatibility notes]\n    B --> C[Run baseline build on Maven 2.x]\n    C --> D[Run same build on Maven 3.0 RC1]\n    D --> E{Behavior changed}\n    E -- No --> F[Record successful validation]\n    E -- Yes --> G[Capture logs and minimal reproducer]\n    G --> H[File JIRA issue]\n    F --> I[Share test summary]\n    H --> I\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Side-by-side setup for Maven 2.x and Maven 3.0-RC1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Use isolated Maven installations so you can run identical commands against both versions without changing project code between runs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Acquire and verify both Maven toolchains<\/h3>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\"><span class=\"hljs-comment\"># Replace placeholders with actual Apache release or archive URLs<\/span>\ncurl -LO <span class=\"hljs-string\">\"&lt;Maven-3.0-RC1-binary-URL&gt;\"<\/span>\ncurl -LO <span class=\"hljs-string\">\"&lt;Maven-2.x-binary-URL&gt;\"<\/span>\n\ntar -xzf apache-maven<span class=\"hljs-number\">-3.0<\/span>-RC1-bin.tar.gz -C \/opt\ntar -xzf apache-maven<span class=\"hljs-number\">-2.<\/span>x-bin.tar.gz -C \/opt\n\nexport MAVEN2_HOME=\/opt\/apache-maven<span class=\"hljs-number\">-2.<\/span>x\nexport MAVEN3_HOME=\/opt\/apache-maven<span class=\"hljs-number\">-3.0<\/span>-RC1\n\n$MAVEN2_HOME\/bin\/mvn -version\n$MAVEN3_HOME\/bin\/mvn -version<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading\">Run identical builds and compare logs<\/h3>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php language-bash\">cd \/path\/to\/your-project\n\n$MAVEN2_HOME\/bin\/mvn -e -X clean test &gt; maven2.log <span class=\"hljs-number\">2<\/span>&gt;&amp;<span class=\"hljs-number\">1<\/span>\n$MAVEN3_HOME\/bin\/mvn -e -X clean test &gt; maven3rc1.log <span class=\"hljs-number\">2<\/span>&gt;&amp;<span class=\"hljs-number\">1<\/span>\n\ndiff -u maven2.log maven3rc1.log &gt; maven-diff.txt\ngrep -n <span class=\"hljs-string\">\"ERROR\"<\/span> maven3rc1.log<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\">Maven 2.x baseline vs Maven 3.0-RC1 validation focus<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Area<\/th><th>Maven 2.x baseline<\/th><th>Maven 3.0-RC1 check<\/th><\/tr><\/thead><tbody><tr><td>Lifecycle execution<\/td><td>Confirm normal <code>clean<\/code>, <code>test<\/code>, and <code>package<\/code> flow<\/td><td>Check for phase ordering or execution differences<\/td><\/tr><tr><td>Plugin behavior<\/td><td>Document plugin versions and expected output<\/td><td>Identify plugin compatibility or invocation changes<\/td><\/tr><tr><td>Dependency resolution<\/td><td>Capture resolved dependencies and scopes<\/td><td>Look for missing artifacts, conflicts, or scope changes<\/td><\/tr><tr><td>Multi-module builds<\/td><td>Record successful reactor build order<\/td><td>Check module ordering and failure propagation<\/td><\/tr><tr><td>Error diagnostics<\/td><td>Note known warnings and failure patterns<\/td><td>Flag new errors and attach full debug logs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to file a useful regression report in JIRA<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If Maven 3.0-RC1 fails where Maven 2.x succeeds, file an issue in Apache JIRA with reproducible details: <a href=\"https:\/\/issues.apache.org\/jira\/\">https:\/\/issues.apache.org\/jira\/<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>State the exact Maven versions tested (baseline and RC).<\/li><li>Include OS and JDK details used during both runs.<\/li><li>Provide the smallest possible project reproducer.<\/li><li>Attach baseline and RC logs, plus a diff if available.<\/li><li>Reference compatibility notes if behavior may be expected.<\/li><\/ul>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"CSS\" data-shcb-language-slug=\"css\"><span><code class=\"hljs language-css language-text\"><span class=\"hljs-selector-tag\">Summary<\/span>: <span class=\"hljs-selector-attr\">&#91;Regression]<\/span> <span class=\"hljs-selector-tag\">Maven<\/span> 3<span class=\"hljs-selector-class\">.0-RC1<\/span> <span class=\"hljs-selector-tag\">fails<\/span> <span class=\"hljs-selector-tag\">build<\/span> <span class=\"hljs-selector-tag\">that<\/span> <span class=\"hljs-selector-tag\">passes<\/span> <span class=\"hljs-selector-tag\">on<\/span> <span class=\"hljs-selector-tag\">Maven<\/span> 2<span class=\"hljs-selector-class\">.x<\/span>\n<span class=\"hljs-selector-tag\">Environment<\/span>: &lt;<span class=\"hljs-selector-tag\">OS<\/span>&gt;, &lt;<span class=\"hljs-selector-tag\">JDK<\/span>&gt;, <span class=\"hljs-selector-tag\">Maven<\/span> 2<span class=\"hljs-selector-class\">.x<\/span>, <span class=\"hljs-selector-tag\">Maven<\/span> 3<span class=\"hljs-selector-class\">.0-RC1<\/span>\n<span class=\"hljs-selector-tag\">Project<\/span>: &lt;<span class=\"hljs-selector-tag\">minimal<\/span> <span class=\"hljs-selector-tag\">reproducer<\/span> <span class=\"hljs-selector-tag\">or<\/span> <span class=\"hljs-selector-tag\">sanitized<\/span> <span class=\"hljs-selector-tag\">sample<\/span>&gt;\n<span class=\"hljs-selector-tag\">Command<\/span>: <span class=\"hljs-selector-tag\">mvn<\/span> <span class=\"hljs-selector-tag\">-e<\/span> <span class=\"hljs-selector-tag\">-X<\/span> <span class=\"hljs-selector-tag\">clean<\/span> <span class=\"hljs-selector-tag\">test<\/span>\n<span class=\"hljs-selector-tag\">Expected<\/span> <span class=\"hljs-selector-tag\">result<\/span>: <span class=\"hljs-selector-tag\">Same<\/span> <span class=\"hljs-selector-tag\">outcome<\/span> <span class=\"hljs-selector-tag\">as<\/span> <span class=\"hljs-selector-tag\">Maven<\/span> 2<span class=\"hljs-selector-class\">.x<\/span> <span class=\"hljs-selector-tag\">baseline<\/span>\n<span class=\"hljs-selector-tag\">Actual<\/span> <span class=\"hljs-selector-tag\">result<\/span>: &lt;<span class=\"hljs-selector-tag\">error<\/span> <span class=\"hljs-selector-tag\">message<\/span> <span class=\"hljs-selector-tag\">and<\/span> <span class=\"hljs-selector-tag\">stack<\/span> <span class=\"hljs-selector-tag\">trace<\/span>&gt;\n<span class=\"hljs-selector-tag\">Attachments<\/span>: <span class=\"hljs-selector-tag\">maven2<\/span><span class=\"hljs-selector-class\">.log<\/span>, <span class=\"hljs-selector-tag\">maven3rc1<\/span><span class=\"hljs-selector-class\">.log<\/span>, <span class=\"hljs-selector-tag\">maven-diff<\/span><span class=\"hljs-selector-class\">.txt<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">CSS<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">css<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\">Best practices for release-candidate feedback<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Test real-world projects, not only sample applications.<\/li><li>Keep Maven 2.x and RC runs as identical as possible.<\/li><li>Always provide a reproducible command sequence.<\/li><li>Attach complete logs collected with debug flags.<\/li><li>Separate expected compatibility differences from true regressions by checking the official notes first.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>This updated guide turns the original Maven 3.0-RC1 testing announcement into a practical workflow for DevOps and build engineers. Learn how to run side-by-side Maven 2.x vs 3.0-RC1 checks and report reproducible regressions.<\/p>\n","protected":false},"author":1,"featured_media":4320,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[2],"tags":[681,3992,3994,3991,161,3987,3988,3989,92,3993,779,3990],"class_list":["post-285","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised","tag-apache-maven","tag-apache-maven-new-release","tag-apache-maven-new-version","tag-build-issues","tag-maven","tag-maven-3-0","tag-pre-release-testing","tag-preview","tag-release","tag-release-preview-maven-3-0","tag-testing","tag-upcoming-release"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=285"}],"version-history":[{"count":3,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/285\/revisions"}],"predecessor-version":[{"id":79122,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/285\/revisions\/79122"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/4320"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}