void updateDiskRegion(DiskRegionView dr) {
    DiskRegionInfo dri = getDRI(dr);
    if (dri != null) {
      dri.setDiskRegion(dr);
    }
  }
For each dri that this oplog has that is currently unrecoverable check to see if a DiskRegion
that is recoverable now exists.
geode-core/src/main/java/org/apache/geode/internal/cache/Oplog.java