Github user olegz commented on a diff in the pull request: https://github.com/apache/nifi/pull/1156#discussion_r86220275 --- Diff: nifi-commons/nifi-utils/src/main/java/org/apache/nifi/util/file/classloader/ClassLoaderUtils.java --- @@ -52,23 +86,29 @@ public static ClassLoader getCustomClassLoader(String modulePath, ClassLoader pa isUrl = false; } if (!isUrl) { - File modulePath = new File(modulePathString); + try { + File modulePath = new File(modulePathString); - if (modulePath.exists()) { + if (modulePath.exists()) { - additionalClasspath.add(modulePath.toURI().toURL()); + additionalClasspath.add(modulePath.toURI().toURL()); - if (modulePath.isDirectory()) { - File[] files = modulePath.listFiles(filenameFilter); + if (modulePath.isDirectory()) { + File[] files = modulePath.listFiles(filenameFilter); - if (files != null) { - for (File jarFile : files) { - additionalClasspath.add(jarFile.toURI().toURL()); + if (files != null) { + for (File jarFile : files) { + additionalClasspath.add(jarFile.toURI().toURL()); --- End diff -- That's fine and is generally expected for classpath entries. However, I would consider NOT adding it to the ```additionalClasspath``` while logging a warning stating that recursive classpath hierarchies are not supported
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