protected ExternalMetrics _gatherMetrics(long creationTime, boolean fullStats)
{
ExternalMetrics metrics = new ExternalMetrics(creationTime);
StoreBackend entries = _entryStore.getBackend();
BackendStatsConfig conf = BACKEND_STATS_CONFIG
.onlyCollectFast(!fullStats);
metrics.stores.entries = new BackendMetrics(entries.getEntryCount(),
_clean(entries.getEntryStatistics(conf)));
metrics.stores.entryIndex = new BackendMetrics(entries.getIndexedCount(),
_clean(entries.getIndexStatistics(conf)));