public static boolean isReadEmptyValueOnMobCellMiss(Scan scan) {
    byte[] readEmptyValueOnMobCellMiss =
      scan.getAttribute(MobConstants.EMPTY_VALUE_ON_MOBCELL_MISS);
    try {
      return readEmptyValueOnMobCellMiss != null && Bytes.toBoolean(readEmptyValueOnMobCellMiss);
    } catch (IllegalArgumentException e) {
      return false;
    }
  }
Indicates whether return null value when the mob file is missing or corrupt. The information is
set in the attribute "empty.value.on.mobcell.miss" of scan.
@param scan The current scan.
@return True if the readEmptyValueOnMobCellMiss is enabled.
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java