Did any one run into runtime exception while running the solution provided by Dezyre for Module 4 assignment 2


2 Answer(s)


Hi Neeraja,

This error is most likely due to an issue in reduce phase.
For quick resolution please share both map and reduce phase logs.

Logs can be searched on Cloudera VM browser by accessing JobTracker URL @ http://localhost:50070/
At the given URL there will be a link URL to the jobId : job_201405030912_0013
Then follow this path:
click on job_201405030912_0013 --> click on map link -> click on logs -> copy and paste to a text file: map.log
click on job_201405030912_0013 --> click on reduce link -> click on logs -> copy and paste to a text file: reduce.log
Please share both of these and the code that is been used for launching this job.
If you are unable to post logs here, please send it to support id.

Happy Learning @ Dezyre!!

Hi Neeraja,

As discussed, please remove the 'abstract' keyword from the definition of the Reduce class in the .java file that you are using to run your assignment.
Create a new jar and re-run the job.
Please post, if there comes any other issue.


Vote-up, if it helps.
Happy Learning @ Dezyre !!