Map-Reduce combiner does not work

Asked Jun 19 '12 at 07:04

Active May 20 '13 at 07:15

Viewed 326 times

I have tried to use this script: http://www.cs.bgu.ac.il/~dsp112/Map-Reduce_Template But the Combiner fails at (line 69).

Combine output records 11,746,934 ... Combine input records 11,746,934

I have analysed the text flat file, but how I can debug it?

edited May 20 '13 at 07:15

greedybuddha

asked Jun 19 '12 at 07:04

Kukuruka

2

DOes the reducer also show a similar number of input and output values - it might just be that every key output from your map stage is unique - hence no combination or reduction. What does the output key/values look like, are they what you are expecting? – Chris White Jun 19 '12 at 10:27

0 Answers0