Github user witgo commented on the pull request: https://github.com/apache/incubator-spark/pull/639#issuecomment-35867784 mvn -v Apache Maven 3.1.1 (0728685237757ffbf44136acec0402957f723d9a; 2013-09-17 23:22:22+0800) Maven home: /usr/local/Cellar/maven/3.1.1/libexec Java version: 1.7.0_51, vendor: Oracle Corporation Java home: /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre Default locale: zh_CN, platform encoding: UTF-8 OS name: "mac os x", version: "10.9.1", arch: "x86_64", family: "mac" mvn -U -Pyarn -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0 -DskipTests compile ERROR: Failed to execute goal org.apache.maven.plugins:maven-remote-resources-plugin:1.4:process (default) on project spark-examples_2.10: Error resolving project artifact: Could not transfer artifact org.eclipse.paho:mqtt-client:pom:0.4.0 from/to apache-repo (https://repository.apache.org/content/repositories/releases): peer not authenticated for project org.eclipse.paho:mqtt-client:jar:0.4.0
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