Title: About MapReduce Describe the issue: Section 3.2. appears to be incorrect - see starred text: 3.b. If a Combiner has been specified with **task.combinedWith(Reducer)**, the Combiner is called on the Mapper results and the combiner's results are retured to the master node or inserted in the intermediary cache. Suggestions for improvement: Additional information:
Adding NeedInfo for Dan.
I agree that the section is a bit confusing, Combiner is capitalized so users might expect it to be an actual interface. But the combiner uses the Reducer interface, so task.combinedWith() has a Reducer parameter. Perhaps we should change **task.combinedWith(Reducer)** to **task.combinedWith(combiner)**, without a capital C?
The fix for this bug is now generally released and available here: https://access.redhat.com/site/documentation/en-US/Red_Hat_JBoss_Data_Grid/6.2/index.html