The Author Online Book Forums are Moving

The Author Online Book Forums will soon redirect to Manning's liveBook and liveVideo. All book forum content will migrate to liveBook's discussion forum and all video forum content will migrate to liveVideo. Log in to liveBook or liveVideo with your Manning credentials to join the discussion!

Thank you for your engagement in the AoF over the years! We look forward to offering you a more enhanced forum experience.

al.krinker (16) [Avatar] Offline
#1
"Steps 1, 2 and 3 above sum up the implementation of the HeatMapBuilder bolt."

While we have most of the stuff here, I did not see declareOutputFields method.

Since we are setting up in Step 1, consider adding this method here for completeness.
matthew.jankowski (17) [Avatar] Offline
#2
This was intentionally left out as that code is meant to address the 3 specific steps that come before it. I can see how this may lead to some confusion, but if you look at the source code, everything should be there. Thanks for the comment.