@Override
  public void cmnClearRegion(long drId, long clearOplogEntryId) {
    DiskRegionView drv = getDiskRegionById(drId);
    if (drv.getClearOplogEntryId() == DiskStoreImpl.INVALID_ID) {
      ifLiveRecordCount++;
    }
    // otherwise previous clear is cancelled so don't change liveRecordCount
    ifTotalRecordCount++;
    drv.setClearOplogEntryId(clearOplogEntryId);
    if (clearOplogEntryId > clearOplogEntryIdHWM) {
      clearOplogEntryIdHWM = clearOplogEntryId;
    }
  }
Set of members that have been revoked. We keep track of the revoked members so that we can
indicate to the user a member has been revoked, rather is simply conflicting
geode-core/src/main/java/org/apache/geode/internal/cache/DiskInitFile.java