private synchronized void updateCounters() {
Map<String, List<FileSystem.Statistics>> map =
new HashMap<String, List<FileSystem.Statistics>>();
for (Statistics stat : FileSystem.getAllStatistics()) {
String uriScheme = stat.getScheme();
if (map.containsKey(uriScheme)) {
List<FileSystem.Statistics> list = map.get(uriScheme);
list.add(stat);
} else {
List<FileSystem.Statistics> list = new ArrayList<FileSystem.Statistics>();
list.add(stat);
map.put(uriScheme, list);
}
}
for (Map.Entry<String, List<FileSystem.Statistics>> entry : map.entrySet()) {
FileSystemStatisticUpdater updater = statisticUpdaters.get(entry.getKey());
if (updater == null) { // new FileSystem has been found in the cache
updater = new FileSystemStatisticUpdater(entry.getValue(), entry.getKey());
statisticUpdaters.put(entry.getKey(), updater);
}
updater.updateCounters();
}
gcUpdater.incrementGcCounter();
updateResourceCounters();
}
/**
* Gets a handle to the Statistics instance based on the scheme associated with path.
*
* @param path the path.
* @param conf the configuration to extract the scheme from if not part of the path.
* @return a Statistics instance, or null if none is found for the scheme.
*/
protected static List<Statistics> getFsStatistics(Path path, Configuration conf)
throws IOException {
List<Statistics> matchedStats = new ArrayList<FileSystem.Statistics>();
path = path.getFileSystem(conf).makeQualified(path);
String scheme = path.toUri().getScheme();
for (Statistics stats : FileSystem.getAllStatistics()) {
if (stats.getScheme().equals(scheme)) {
matchedStats.add(stats);
}
}
return matchedStats;
}