On 31-May-07, at 1:33 AM, Gal Nitzan wrote:
Hi,
We have a small index with about 4 million docs.
On this index we have a field "tags" which is a multiple values field.
Running a facet query on the index with something like:
facet=true&facetField=tags&q=type:video takes about 1 minute.
We have defined a large cache which enables the query to run much
faster
(about 1 sec)
<filterCache
class="solr.LRUCache"
size="1500000"
initialSize="600000"
autowarmCount="300000"/>
However, the cache size brings us to the 2GB limit.
If the cardinality of many of the tags is low, you can use HashSet-
based filters (the default size at which a HashSet is used is 3000).
Do you really have 1.5M unique values in that field. Are you
analyzing the field (you probably shouldn't be)?
-Mike
