Hiroshi Ikeda created HADOOP-10306: -------------------------------------- Summary: Unnecessary weak reference map to cache classes in Configuration Key: HADOOP-10306 URL: https://issues.apache.org/jira/browse/HADOOP-10306 Project: Hadoop Common Issue Type: Bug Reporter: Hiroshi Ikeda Priority: Trivial
In Configuration.getClassByNameOrNull(): {code} synchronized (CACHE_CLASSES) { map = CACHE_CLASSES.get(classLoader); if (map == null) { map = Collections.synchronizedMap( new WeakHashMap<String, WeakReference<Class<?>>>()); CACHE_CLASSES.put(classLoader, map); } } {code} Change "new WeaHashMap<String, ...>()" to "new HashMap<String, ...>" or something. Otherwise, even while the class is actively used, this may drop its class cache. -- This message was sent by Atlassian JIRA (v6.1.5#6160)