long t1 = System.currentTimeMillis();
HashSet<ByteSequence> allColumnFamilies = new HashSet<ByteSequence>();
if (mfw.supportsLocalityGroups()) {
for (Entry<String,Set<ByteSequence>> entry : lGroups.entrySet()) {
compactLocalityGroup(entry.getKey(), entry.getValue(), true, conf, fs, filesToCompact, propogateDeletes, extent, compactTmpName, mfw, majCStats);
allColumnFamilies.addAll(entry.getValue());
}
}