private long getMaxCrfSize() {
    return maxCrfSize;
  }
There're 3 cases to use writeRVV: 1) endGII: DiskRegion.writeRVV(region=null, true),
Oplog.writeRVV(true,null) 2) beginGII: DiskRegion.writeRVV(region=this, false),
Oplog.writeRVV(false,sourceRVV!=null) 3) clear: DiskRegion.writeRVV(region=this, null),
Oplog.writeRVV(null,sourceRVV!=null)
geode-core/src/main/java/org/apache/geode/internal/cache/Oplog.java