Empty value in write() method : Custom Datatype in Hadoop MapReduce[Solved]
On Wed, Oct 30, 2013 at 11:23 AM, unmesha sreeveni <unmeshab...@gmail.com>wrote:
> I am emiting two 2D double array as key and value.I am in construction of
> my WritableComparable class.
>
>
> *public class MF implements WritableComparable<MF>{
> /**
> * @param args
> */private double[][] value;
> public MF() {
> // TODO Auto-generated constructor stub
> }
> public MF(double[][] value) {
> // TODO Auto-generated constructor stub
>
> this.value = new double[value.length][value[0].length];
> // System.out.println("in matrix");}
> public void set(double[][] value) {
> this.value = value;
> }
> public double[][] getValue() {
> return value;
> }
>
> @Override
> public void write(DataOutput out) throws IOException {
> System.out.println("write");
> int row=0;
> int column=0;
> for(int i=0; i<value.length;i++){
> row = value.length;
> for(int j=0; j<value[i].length; j++){
> column = value[i].length;
> }
> }
> out.writeInt(row);
> out.writeInt(column);
>
>
>
> for(int i=0;i<value.length ; i++){
> for(int j= 0 ; j< value[0].length;j++){
> out.writeDouble(value[i][j]);
> }
> }
> for(int i =0;i< value.length ;i ++){
> for(int j = 0;j <value[0].length;j++){
> System.out.print(value[i][j]+ "\t");
> }
> System.out.println("");
> }
>
> }
>
> @Override
> public void readFields(DataInput in) throws IOException {
> int row = in.readInt();
> int col = in.readInt();
>
>
> double[][] value = new double[row][col];
> for(int i=0;i<row ; i++){
> for(int j= 0 ; j< col;j++){
> value[i][j] = in.readDouble();
>
> }
> }
> }
>
> @Override
> public int hashCode() {
>
> }
>
> @Override
> public boolean equals(Object o) {
>
> }
>
> @Overridepublic int compareTo(MF o) {
> // TODO Auto-generated method stub
> return 0;}
> @Override
> public String toString() {
> System.out.println(Arrays.toString(value));
> return Arrays.toString(value);
>
> }*
>
> *}*
>
> And by half of the way...when i tried to print my matrix within write
> method,the matrix is not having values
>
>
> write
>
> 0.0 0.0 0.0
> 0.0 0.0 0.0
> 0.0 0.0 0.0
>
>
> write
>
> 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
>
>
> I am doing something wrong. Can anyone help me out to resolve this.I am
> getting apt no of rows and col.
>
> --
> *Thanks & Regards*
> *
> *
> Unmesha Sreeveni U.B*
> *
>
> **
>
--
*Thanks & Regards*
*
*
Unmesha Sreeveni U.B*
*
*Junior Developer
*
*Amrita Center For Cyber Security
*
*
Amritapuri.
www.amrita.edu/cyber/
*
