Scanner scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
scanner.setScanIterators(1000, ColumnFamilyCounter.class.getName(), "cfc");
scanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
Stat s = new Stat();
int count = 0;
for (Entry<Key,Value> entry : scanner) {
count++;
s.addStat(Long.parseLong(entry.getValue().toString()));
}
if (count > 0)
return String.format("%d %d %.3f %.3f", s.getMin(), s.getMax(), s.getAverage(), s.getStdDev());
else
return "0 0 0 0";
}