public void setOplogId(long v) {
      oplogId = v;
    }
@return byte indicating the user bits. The correct value is returned only in the specific
        case of entry recovered from oplog ( & not rolled to Htree) & the RECOVER_VALUES flag
        is false . In other cases the exact value is not needed
geode-core/src/main/java/org/apache/geode/internal/cache/entries/DiskEntry.java