I've possibly got the same issue. I've got a content type with 16K nodes. I run into problems when I try to aggregate this using View Aggregator Plus. I get a 'failed to load resource : the server responded with a status of 500' error.
Its easiest to describe if I start from what happens if I aggregate using Drupal's core views module.
- Structure > Views > Add View
- Content of type My16KNodes
- Create a page
- Display format Table of Fields
- Items to display 100 <------------ the key field for this issue
- Then create my aggregated view on the Structure > Views > Title / Format / Fields page
The Items to Display controls the number of rows in the display of the aggregated view. I can aggregate 16K nodes, as long as the number of grouped rows in the resulting view doesn't exceed 100 (items to display).Then I try to do exactly the same with Views Aggregator Plus, except that the Display Format is obviously a Table with aggregation options. VAP doesn't use the Items To Display (in my example set to 100) to control the number of rows in the output. Instead VAP uses the Items To Display to control the number of nodes that it accepts as inputs. VAP successfully takes the first 100 nodes of type My16KNodes, and aggregates those.
Put simply - Structure > Views > Add View > Items to display:
- on core aggregated Views, limits the rows output;
- on Views Aggregator Plus, limits the number of nodes input.Because I want to use Views Aggregator Plus to display aggregated data describing my 16K nodes, I try the obvious thing and increase the Items To Display to 17000. For both VAP and core Views this results in an Ajax error ('failed to load resource : the server responded with a status of 500'). The maximum value for Items To Display that I can input without getting this error seems to be about 4000. Sometimes 4000 triggers the error, sometimes it doesn't.
For core aggregated Views limiting the output to less than 4000 rows doesn't seem like much of a constraint, but for VAP limiting the input to less than 4000 nodes is a big constraint (for me anyway). VAP is a great tool. It offers features that I'd really like to use. But I need a way to be able to get it to display the results of aggregating 16K+ nodes.