@Override
  public Result mutateRow(RowMutations rm) throws IOException {
    TRowMutations tRowMutations = ThriftUtilities.rowMutationsFromHBase(rm);
    try {
      client.mutateRow(tableNameInBytes, tRowMutations);
      return Result.EMPTY_RESULT;
    } catch (TException e) {
      throw new IOException(e);
    }
  }
Create the closest row after the specified row
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/client/ThriftTable.java