private void addLive(DiskEntry de) {
    totalCount.incrementAndGet();
    totalLiveCount.incrementAndGet();
    if (isCompactionPossible()) {
      liveEntries.insert(de);
    }
  }
The number of records in this oplog that contain the most recent value of the entry.
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplog.java