[SOLR-10320] Perform secondary sort using both values in and outside Solr index

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Yuchuan Zhou
• Created: 20/Mar/17 14:40
• Updated: 08/Jun/19 15:29

Description

There are some situations that we need to sort results based on values outside of Solr (say, from a separate datastore or a data analytics service that ranks entities based on analytic results). There is also the need to return results in a deterministic order but applying a dynamic chain of sorting and/or ranking algorithms to the result set. This chain would be processed as a secondary sort implementation, where ties returned from one sorting/ranking algorithm are passed to the next sorting/ranking algorithm in the chain until all ties are resolved, resulting in a deterministic result order. This chain should have the ability to apply sorting algorithms that use data found within the solr index as well as outside of the index.

Issue Links

• links to: GitHub Pull Request #179