Hi,
Thanks...... in my mapper I added obj={} which I left out.
But still cant get MR to work but left out that i am using filters. I get
the same error and am wondering if I am using key filters correct.
{'uuid':1,'campaign_id':2,'adgroup_id':3,'date':4,'country':5}
filters = key_filter.tokenize(":",5).eq(country) \
& key_filter.tokenize(":", 2).eq(campaign_id) \
& key_filter.tokenize(":", 4).string_to_int().less_than_eq(date_end) \
& key_filter.tokenize(":",
4).string_to_int().greater_than_eq(date_start)
query.add_key_filters(filters)
'[['and', [['tokenize', ':', 5], ['eq', 'SG']], [['tokenize', ':', 2],
['eq', 'cid5989410021']], [['tokenize', ':', 4], ['string_to_int'],
['less_than_eq', '2012122509']], [['tokenize', ':', 4], ['string_to_int'],
['greater_than_eq', '2012121810']]]]
If I leave out & key_filter.tokenize(":",
filter_map['date']).string_to_int().greater_than_eq(date_start) the query
works and I get the data I want. If I include then I get the error.
So...what I cant figure out is why I cant use the last filter. My key
looks like this.
07712f3d-6661-44a7-89ff-4e4ed3b5f5a6:cid5989410021:agid7744464312:2012122205:SG
uuid:campaign_id:aid:date:country where date is in YYYYMMDDHH format
I just want a query that will filter by campaign_id, country, and between a
date range.
thanks
On Thu, Dec 20, 2012 at 11:07 PM, Bryan Fink <br...@basho.com> wrote:
> On Thu, Dec 20, 2012 at 8:52 AM, David Montgomery
> <davidmontgom...@gmail.com> wrote:
> > {fitting_exited_abnormally,[{<<"lineno">>,3},{<<"message">>,<<"TypeError:
> > reduce of empty array with no initial value">>}
>
> Hi, David. The error is occurring on line three of your reduce
> function, where it calls `values.reduce`:
>
> > query.reduce('''
> > function(values, arg){
> > return [ values.reduce( function(acc, item) {
> ...
>
> It's complaining about the fact that `values` is an empty array, so
> `values.reduce` doesn't know what to do. You will need to either
> include an initial value as a second parameter, like:
>
> values.reduce(function(acc, item) { ... },
> {}) //initial empty object
>
> Or check to see if `values` is empty before reducing, like the Riak JS
> reduce builtins do:
>
> https://github.com/basho/riak_kv/blob/master/priv/mapred_builtins.js#L68
>
> Cheers,
> Bryan
>
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