[jira] [Created] (SOLR-7753) Parse localParams and query object once and re-use when hanging queries under pivots

["Shalin Shekhar Mangar (JIRA)" <ji...@apache.org>]

Shalin Shekhar Mangar created SOLR-7753:
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             Summary: Parse localParams and query object once and re-use when hanging queries under pivots
                 Key: SOLR-7753
                 URL: https://issues.apache.org/jira/browse/SOLR-7753
             Project: Solr
          Issue Type: Improvement
          Components: faceting
            Reporter: Shalin Shekhar Mangar
             Fix For: 5.3, Trunk


When hanging facet.query under pivots, the query (and localparams) is parsed for every pivot value. We can avoid it by parsing and caching the query object just once during FacetComponent#prepare.

As noted by Hoss in SOLR-4212:
{quote}
It's not just an issue of localparams, but also the parsing & construction of the Query object – doing that once per request (just like the way you've changed the range faceting to do all the bucket calculation once) could give us some serious performance savings when facet.query params are hung of of many and/or large pivot trees. (should just mean a pretty trivial new subclass of FacetBase that also has a public Query getQuery() accessor)
{quote}



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