Hi,
Given that map reduce is the primary way of getting data out of riak, and i
use python api, I am hard pressed to find any simple examples. Not even on
the officially supported riak python api.
Below is how I add a record to riak:
id = """%s:%s:%s:%s:%s""" %
(str(uuid4()),campaign_id,aid,da,country)
worker_bucket = impression_bucket.new(id, data=qs)
worker_bucket.add_index('field1_bin', campaign_id)
worker_bucket.add_index('field2_bin', aid)
worker_bucket.add_index('field3_bin', country)
worker_bucket.add_index('field4_bin', da)
So....
If I want to get all records and sum up by country and date is in a date
range then how? I am ok with the reduce portion but not clear on the map
portion. How do I add a index for country=US and da>201207 and da<201212?
client = riak.RiakClient(host='103.4.112.103')
query = client.add('impressions')
query.map('''
function(value, keyData, arg) {
var data = Riak.mapValuesJson(value)[0];
var alt_key = data['hw'] + '_' + data['ssp'];
var obj = {};
obj[alt_key] = 1;
return [ obj ];
}''')
Thanks
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