hadoop mapper类 切割数据的时候怎么根据回车切割?

Question

hadoop mapper类 切割数据的时候怎么根据回车切割

Answer 1

DataTable dt = new DataTable();dt.Columns.Add(new DataColumn("PreRevDate0", typeof(decimal)));DataColumn col = new DataColumn();col.ColumnName = "PreRevDate1";col.Expression = "ABS(Convert.ToInt32(PreRevDate0))";col.DataType = typeof(decimal);dt.Columns.Add(col);DataRow dr = dt.NewRow();dr["PreRevDate0"] = -1;dt.Rows.Add(dr);