Gopal V created HADOOP-16461:
--------------------------------
Summary: Regression: FileSystem cache lock parses XML within the
lock
Key: HADOOP-16461
URL: https://issues.apache.org/jira/browse/HADOOP-16461
Project: Hadoop Common
Issue Type: Bug
Components: filecache
Reporter: Gopal V
{code}
fs = createFileSystem(uri, conf);
synchronized (this) { // refetch the lock again
FileSystem oldfs = map.get(key);
if (oldfs != null) { // a file system is created while lock is releasing
fs.close(); // close the new file system
return oldfs; // return the old file system
}
// now insert the new file system into the map
if (map.isEmpty()
&& !ShutdownHookManager.get().isShutdownInProgress()) {
ShutdownHookManager.get().addShutdownHook(clientFinalizer,
SHUTDOWN_HOOK_PRIORITY);
}
fs.key = key;
map.put(key, fs);
if (conf.getBoolean(
FS_AUTOMATIC_CLOSE_KEY, FS_AUTOMATIC_CLOSE_DEFAULT)) {
toAutoClose.add(key);
}
return fs;
}
{code}
The lock now has a ShutdownHook creation, which ends up doing
{code}
HookEntry(Runnable hook, int priority) {
this(hook, priority,
getShutdownTimeout(new Configuration()),
TIME_UNIT_DEFAULT);
}
{code}
which ends up doing a "new Configuration()" within the locked section.
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