@Override
    public void replaceLive(DiskEntry old, DiskEntry de) {
      synchronized (liveEntries) {
        liveEntries.replace(old, de);
        if (pendingKrfTags != null && de.getVersionStamp() != null) {
          // Remember the version tag of the entry as it was written to the crf.
          pendingKrfTags.remove(old);
          pendingKrfTags.put(de, new CompactVersionHolder(de.getVersionStamp()));
        }
      }
    }
A map of DiskEntry to the VersionTag that is written to disk associated with this tag. Only
needed for async regions so that we can generate a krf with a version tag that matches the
the tag we have written to disk for this oplog.
geode-core/src/main/java/org/apache/geode/internal/cache/Oplog.java