•• PROTECTED 関係者外秘 Hi,
I have a big collection with around 100 million records. There is a requirement to take an average on "Amount" field against each "code" field. And then calculate the averages on this averages. Since my "code" field has a very huge cardinality, which could be around 200,000 or even in millions ; It gets highly complex to calculate the average of averages through Java. Even Solr takes a huge time listing the averages. And the JSON response size becomes huge. Is there some way we can tackle this? Any way we stats on stats? Thanks, Lewin
