@Override
  protected CacheOperationMessage createMessage() {
    EntryEventImpl event = getBaseEvent();
    RemoveAllMessage msg = new RemoveAllMessage();
    msg.eventId = event.getEventId();
    msg.context = event.getContext();
    return msg;
  }
change event id into fake event id The algorithm is to change the threadid into
bucketid*MAX_THREAD_PER_CLIENT+oldthreadid. So from the log, we can derive the original
thread id.

@return wether current event id is fake or not new bucket id
geode-core/src/main/java/org/apache/geode/internal/cache/DistributedRemoveAllOperation.java