@Override
  public CheckAndMutateResult checkAndMutate(CheckAndMutate checkAndMutate) throws IOException {
    return checkAndMutate(checkAndMutate, HConstants.NO_NONCE, HConstants.NO_NONCE);
  }
Returns effective durability from the passed durability and the table descriptor.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java