private void txHandleWANEvent(final LocalRegion owner, EntryEventImpl callbackEvent,
      TXEntryState txEntryState) {
    owner.txHandleWANEvent(callbackEvent);
    if (txEntryState != null && callbackEvent.getTailKey() != -1) {
      txEntryState.setTailKey(callbackEvent.getTailKey());
    }
  }
This code needs to be evaluated. It was added quickly to help PR persistence not to consume as
much memory.
geode-core/src/main/java/org/apache/geode/internal/cache/AbstractRegionMap.java