MapReduce query returns case_clause badmatch?

Jonathan Langevin jlangevin at loomlearning.com
Fri Jul 15 15:55:28 EDT 2011


Didn't realize that, thanks for the correction! :-)
*

<http://www.loomlearning.com/>
Jonathan Langevin
Systems Administrator
Loom Inc.
Wilmington, NC: (910) 241-0433 - jlangevin at loomlearning.com -
www.loomlearning.com - Skype: intel352
*


On Fri, Jul 15, 2011 at 3:29 PM, Sean Cribbs <sean at basho.com> wrote:

> Jonathan,
>
> Riak cannot run a map phase that takes anything other than
> bucket/key[/keydata] inputs, so returning [value] from your first map phase
> is invalid. Instead, just return [1] if your regexp test passes.
>
> On Fri, Jul 15, 2011 at 2:07 PM, Jonathan Langevin <
> jlangevin at loomlearning.com> wrote:
>
>> When running several maps and one reduce against a bucket, I'm getting an
>> error, info is below.
>> Any idea what I'm doing wrong?
>>
>> Data submitted (printed as php-style array):
>> array
>>     (
>>         'inputs' => 'Course'
>>         'query' => array
>>         (
>>             '0' => array
>>             (
>>                 'map' => array
>>                 (
>>                     'keep' => false
>>                     'language' => 'javascript'
>>                     'arg' => null
>>                     'source' => 'function(v){return [v];}'
>>                 )
>>             )
>>             '1' => array
>>             (
>>                 'map' => array
>>                 (
>>                     'keep' => false
>>                     'language' => 'javascript'
>>                     'arg' => null
>>                     'source' => '
>>                 function(value){
>>                     if(!value.not_found) {
>>                         var object = Riak.mapValuesJson(value)[0];
>>                         var val = object[\"idNumber\"].toLowerCase();
>>                         if((val.match(/lbst/))) {
>>                             return [value];
>>                         }
>>                     }
>>                     return [];
>>                 }
>>                     '
>>                 )
>>             )
>>             '2' => array
>>             (
>>                 'map' => array
>>                 (
>>                     'keep' => false
>>                     'language' => 'javascript'
>>                     'arg' => null
>>                     'source' => 'function(){return [1]}'
>>                 )
>>             )
>>             '3' => array
>>             (
>>                 'reduce' => array
>>                 (
>>                     'keep' => true
>>                     'language' => 'javascript'
>>                     'arg' => null
>>                     'name' => 'Riak.reduceSum'
>>                 )
>>             )
>>         )
>>     )
>>
>>
>> And here is the [start of] the response I get, below.
>> What's interesting is, I also get back the results of my query (or at
>> least, the contents of the bucket...).
>>
>>     array
>>     (
>>         'headers' => array
>>         (
>>             'http_code' => 500
>>             'server' =>
>> 'MochiWeb/1.1 WebMachine/1.7.3 (participate in the frantic)'
>>             'date' => 'Fri, 15 Jul 2011 18:02:25 GMT'
>>             'content-type' => 'text/html'
>>             'content-length' => '2453'
>>         )
>>         'body' =>
>> '<html><head><title>500 Internal Server Error</title></head><body><h1>Internal Server Error</h1>The server encountered an error while processing this request:<br><pre>{error,
>>     {error,
>>         {case_clause,
>>             {{badmatch,
>>                  {struct,
>>                      [{<<\"bucket\">>,<<\"Course\">>},
>>                       {<<\"key\">>,
>> .....
>> *
>>
>>
>>  <http://www.loomlearning.com/>
>>  Jonathan Langevin
>> Systems Administrator
>> Loom Inc.
>> Wilmington, NC: (910) 241-0433 - jlangevin at loomlearning.com -
>> www.loomlearning.com - Skype: intel352
>> *
>>
>> _______________________________________________
>> riak-users mailing list
>> riak-users at lists.basho.com
>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>>
>>
>
>
> --
> Sean Cribbs <sean at basho.com>
> Developer Advocate
> Basho Technologies, Inc.
> http://www.basho.com/
>
>
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