@Override
public void minorCompactionFinished(TInfo info, long id, final long seq, final int tid, final String fqfn) throws NoSuchLogIDException {
Logger out = logs.get(id);
if (out == null)
throw new NoSuchLogIDException();
out.key.event = COMPACTION_FINISH;
out.key.seq = seq;
out.key.tid = tid;
out.value.mutations = empty;
// this lock should not be necessary since there should only be one writer