This causes ArrayIndexOutOfBound Exception which was the reason to  generate 
empty directory 
line.substring(i,2) should be line.substring(i,i+2); as substring takes start 
and end index as parameters Thanks,
  L.Meenakshi 

     On Wednesday, January 7, 2015 7:42 PM, Vandana kumari 
<[email protected]> wrote:
   

 I had made changes in the file but still nothing happens. Please help i am 
beginner in this.
kmer.java is attached herewith.

On Wed, Jan 7, 2015 at 7:03 PM, Vandana kumari <[email protected]> wrote:

yes, there is no compilation error. But thank you for finding mistakes, i will 
make the above changes and let you all know.
On Wed, Jan 7, 2015 at 6:52 PM, Shahab Yunus <[email protected]> wrote:

Vandana,
Also, in the code that you attached, I see 2 compilation errors. How is it even 
compiling? Or am I missing something here?
1- The 'sum' is not declared in the Map class.2- The 'sum' in the Reduce class, 
when written to the context needs to be IntWritable and not directly an int.
Regards,Shahab
On Wed, Jan 7, 2015 at 8:18 AM, Shahab Yunus <[email protected]> wrote:

First try:
You should use @Override annotation before map and reduce methods so they are 
actually called.
Like this:@Override public void map(LongWritable k,Text v,Context con)throws 
IOException,InterruptedException
        {...
Do same for 'reduce' method.
Regards,Shahab
On Wed, Jan 7, 2015 at 7:58 AM, Vandana kumari <[email protected]> wrote:



On Wed, Jan 7, 2015 at 4:16 PM, saurabh chhajed <[email protected]> wrote:

Can you attach .java file instead of .class ?

On Wed, Jan 7, 2015 at 4:04 PM, Vandana kumari <[email protected]> wrote:

Hello all,

I had written a kmer mapreduce program in java. There is no error in the 
program and while running it creates an output directory in hadoop file system 
but that directory is empty. 
 Please help to resolve this issue.
Input file(test.txt) and kmer.java is attached herewith.
-- 
Thanks and regards  Vandana kumari



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