I looked at the source code and looks like this is where the Exception is thrown:   core/src/main/java/org/apache/oozie/action/hadoop/JavaActionExecutor.java       protected void addSystemShareLibForAction(Configuration conf) throws ActionExecutorException {         ShareLibService shareLibService = Services.get().get(ShareLibService.class);         // ShareLibService is null for test cases         if (shareLibService != null) {             try {                 List<Path> listOfPaths = shareLibService.getSystemLibJars(JavaActionExecutor.OOZIE_COMMON_LIBDIR);                 if (listOfPaths.isEmpty()) {                     throw new ActionExecutorException(ActionExecutorException.ErrorType.FAILED, "EJ001",                             "Could not locate Oozie sharelib");                 }                 addLibPathsToClassPath(conf, listOfPaths);                 addLibPathsToClassPath(conf, shareLibService.getSystemLibJars(getType()));             }             catch (IOException ex) {                 throw new ActionExecutorException(ActionExecutorException.ErrorType.FAILED,                         "Failed to add action specific sharelib", ex.getMessage());             }         }     } ... View more