public StatisticsFactory getStatisticsFactory() {
    return cache.getDistributedSystem();
  }
Update the on disk GC version for the given member, only if the disk has actually recorded all
of the updates including that member.

@param diskRVV the RVV for what has been persisted
@param inMemoryRVV the RVV of what is in memory
@param member The member we're trying to update
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java