Hi
I am not sure if rereduce would happen if *group *is set to *true*,
actually someone raised it here
<http://stackoverflow.com/questions/13338799/does-couchdbs-group-true-prevent-rereduce>.
But there is no assured answer.
>> group=true is the conceptual equivalent of group_level=exact, so
CouchDB runs a reduce per unique key in the map row set.
This is how it is explained in doc for grouping
(http://wiki.apache.org/couchdb/Introduction_to_CouchDB_views#Grouping) .
It sounds like CouchDB would collect all the values for the same key and
only call reduce once per each distinct key.
But in another article
<http://horicky.blogspot.com/2008/10/couchdb-implementation.html>, it is
said that "This reduce result will then merge with existing rereduce
result to compute the final reduce result of this key"
In my project, there are many documents but there are most 2 values
with the same key after grouping for each distinct key.
Will rereduce happen if I only run one server ?
Will rereduce happen if I have multiple master server?
Best Regards
J.W
