diff --git a/its/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java b/its/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
index 3c2452a9fd..c7f62b20d0 100644
--- a/its/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
+++ b/its/core-it-suite/src/test/java/org/apache/maven/it/IntegrationTestSuite.java
@@ -85,6 +85,7 @@ public class IntegrationTestSuite
// suite.addTestSuite( MavenIT0109ReleaseUpdateTest.class );
// suite.addTestSuite( MavenIT0108SnapshotUpdateTest.class ); -- MNG-3137
+ suite.addTestSuite( MavenITmng4357LifecycleMappingDiscoveryInReactorTest.class );
suite.addTestSuite( MavenITmng4355ExtensionAutomaticVersionResolutionTest.class );
suite.addTestSuite( MavenITmng4353PluginDependencyResolutionFromPomRepoTest.class );
suite.addTestSuite( MavenITmng4350LifecycleMappingExecutionOrderTest.class );
diff --git a/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng4357LifecycleMappingDiscoveryInReactorTest.java b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng4357LifecycleMappingDiscoveryInReactorTest.java
new file mode 100644
index 0000000000..ba6b724d51
--- /dev/null
+++ b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng4357LifecycleMappingDiscoveryInReactorTest.java
@@ -0,0 +1,72 @@
+package org.apache.maven.it;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.apache.maven.it.Verifier;
+import org.apache.maven.it.util.ResourceExtractor;
+
+import java.io.File;
+import java.util.Properties;
+
+/**
+ * This is a test set for MNG-4357.
+ *
+ * @author Benjamin Bentmann
+ */
+public class MavenITmng4357LifecycleMappingDiscoveryInReactorTest
+ extends AbstractMavenIntegrationTestCase
+{
+
+ public MavenITmng4357LifecycleMappingDiscoveryInReactorTest()
+ {
+ super( "[2.1.0,)" );
+ }
+
+ /**
+ * Test that different projects in a reactor build can use different versions of the same extension.
+ * This should still hold true if the two versions of the extension provide the same set of components.
+ */
+ public void testit()
+ throws Exception
+ {
+ File testDir = ResourceExtractor.simpleExtractResources( getClass(), "/mng-4357" );
+
+ Verifier verifier = new Verifier( testDir.getAbsolutePath() );
+ verifier.setAutoclean( false );
+ verifier.deleteDirectory( "target" );
+ verifier.deleteDirectory( "mod-a/target" );
+ verifier.deleteDirectory( "mod-b/target" );
+ verifier.deleteArtifacts( "org.apache.maven.its.mng4357" );
+ Properties filterProps = verifier.newDefaultFilterProperties();
+ verifier.filterFile( "settings-template.xml", "settings.xml", "UTF-8", filterProps );
+ verifier.getCliOptions().add( "--settings" );
+ verifier.getCliOptions().add( "settings.xml" );
+ verifier.executeGoal( "validate" );
+ verifier.verifyErrorFreeLog();
+ verifier.resetStreams();
+
+ verifier.assertFilePresent( "mod-a/target/old.txt" );
+ verifier.assertFileNotPresent( "mod-a/target/new.txt" );
+
+ verifier.assertFileNotPresent( "mod-b/target/old.txt" );
+ verifier.assertFilePresent( "mod-b/target/new.txt" );
+ }
+
+}
diff --git a/its/core-it-suite/src/test/resources/mng-4357/mod-a/pom.xml b/its/core-it-suite/src/test/resources/mng-4357/mod-a/pom.xml
new file mode 100644
index 0000000000..c6df928259
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/mod-a/pom.xml
@@ -0,0 +1,46 @@
+
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.its.mng4357
+ mod-a
+ 0.1
+ maven-core-it
+
+ Maven Integration Test :: MNG-4357 :: Module A
+
+ Test that different projects in a reactor build can use different versions of the same extension.
+ This should still hold true if the two versions of the extension provide the same set of components.
+
+
+
+
+
+ org.apache.maven.its.mng4357
+ extension
+ 0.1
+ true
+
+
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/mod-b/pom.xml b/its/core-it-suite/src/test/resources/mng-4357/mod-b/pom.xml
new file mode 100644
index 0000000000..0e91da9d71
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/mod-b/pom.xml
@@ -0,0 +1,46 @@
+
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.its.mng4357
+ mod-b
+ 0.1
+ maven-core-it
+
+ Maven Integration Test :: MNG-4357 :: Module B
+
+ Test that different projects in a reactor build can use different versions of the same extension.
+ This should still hold true if the two versions of the extension provide the same set of components.
+
+
+
+
+
+ org.apache.maven.its.mng4357
+ extension
+ 0.2
+ true
+
+
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/pom.xml b/its/core-it-suite/src/test/resources/mng-4357/pom.xml
new file mode 100644
index 0000000000..b4aa3f16e0
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/pom.xml
@@ -0,0 +1,40 @@
+
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.its.mng4357
+ test
+ 0.1
+ pom
+
+ Maven Integration Test :: MNG-4357
+
+ Test that different projects in a reactor build can use different versions of the same extension.
+ This should still hold true if the two versions of the extension provide the same set of components.
+
+
+
+ mod-a
+ mod-b
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.jar b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.jar
new file mode 100644
index 0000000000..85506d674b
Binary files /dev/null and b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.jar differ
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.pom b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.pom
new file mode 100644
index 0000000000..3d0d6ae10f
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.1/extension-0.1.pom
@@ -0,0 +1,70 @@
+
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.its.mng4357
+ extension
+ 0.1
+ maven-plugin
+
+ Maven Integration Test :: MNG-4357 :: Extension
+
+ Test that different projects in a reactor build can use different versions of the same extension.
+ This should still hold true if the two versions of the extension provide the same set of components.
+
+ 2009
+
+
+ true
+
+
+
+
+ maven-core-it
+ file:///${basedir}/repo
+
+
+
+
+
+ org.apache.maven
+ maven-plugin-api
+ 2.0
+
+
+
+
+
+
+ .
+
+ pom.xml
+ src/**
+
+
+
+ src/main/resources
+
+
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.jar b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.jar
new file mode 100644
index 0000000000..22f34a99d9
Binary files /dev/null and b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.jar differ
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.pom b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.pom
new file mode 100644
index 0000000000..865bc81b25
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/0.2/extension-0.2.pom
@@ -0,0 +1,70 @@
+
+
+
+
+
+ 4.0.0
+
+ org.apache.maven.its.mng4357
+ extension
+ 0.2
+ maven-plugin
+
+ Maven Integration Test :: MNG-4357 :: Extension
+
+ Test that different projects in a reactor build can use different versions of the same extension.
+ This should still hold true if the two versions of the extension provide the same set of components.
+
+ 2009
+
+
+ true
+
+
+
+
+ maven-core-it
+ file:///${basedir}/repo
+
+
+
+
+
+ org.apache.maven
+ maven-plugin-api
+ 2.0
+
+
+
+
+
+
+ .
+
+ pom.xml
+ src/**
+
+
+
+ src/main/resources
+
+
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/maven-metadata.xml b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/maven-metadata.xml
new file mode 100644
index 0000000000..4b84b226be
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/extension/maven-metadata.xml
@@ -0,0 +1,15 @@
+
+
+ org.apache.maven.its.mng4357
+ extension
+ 0.1
+
+ 0.2
+ 0.2
+
+ 0.1
+ 0.2
+
+ 20090914144616
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/maven-metadata.xml b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/maven-metadata.xml
new file mode 100644
index 0000000000..83b1ca62e5
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/repo/org/apache/maven/its/mng4357/maven-metadata.xml
@@ -0,0 +1,10 @@
+
+
+
+
+ Maven Integration Test :: MNG-4357 :: Extension
+ extension
+ extension
+
+
+
diff --git a/its/core-it-suite/src/test/resources/mng-4357/settings-template.xml b/its/core-it-suite/src/test/resources/mng-4357/settings-template.xml
new file mode 100644
index 0000000000..cde4215860
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-4357/settings-template.xml
@@ -0,0 +1,55 @@
+
+
+
+
+
+
+
+ maven-core-it-repo
+
+
+ maven-core-it
+ @baseurl@/repo
+
+ ignore
+
+
+ false
+
+
+
+
+
+ maven-core-it
+ @baseurl@/repo
+
+ ignore
+
+
+ false
+
+
+
+
+
+
+ maven-core-it-repo
+
+