It looks like builds are failing on the H9 host with "cannot access java.lang.Runnable"
Example from https://builds.apache.org/job/PreCommit-HDFS-Build/8313/artifact/patchprocess/trunkJavacWarnings.txt : [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 03:13 min [INFO] Finished at: 2014-10-03T18:04:35+00:00 [INFO] Final Memory: 57M/839M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:testCompile (default-testCompile) on project hadoop-mapreduce-client-app: Compilation failure [ERROR] /home/jenkins/jenkins-slave/workspace/PreCommit-HDFS-Build/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/commit/TestCommitterEventHandler.java:[189,-1] cannot access java.lang.Runnable [ERROR] bad class file: java/lang/Runnable.class(java/lang:Runnable.class) I don't have shell access to this, does anyone know what's going on on H9? best, Colin