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https://issues.apache.org/jira/browse/SOLR-10320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949555#comment-15949555
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ASF GitHub Bot commented on SOLR-10320:
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GitHub user bkinlaw opened a pull request:
https://github.com/apache/lucene-solr/pull/179
SOLR-10320: Perform secondary sort using both values in and outside S…
…olr index
This is an ideas pull request to address issue SOLR-10320. Any
suggestions/feedback is welcome. Still needs more testing and unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bkinlaw/lucene-solr SOLR-10320
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/lucene-solr/pull/179.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #179
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commit 52a72dc845261e116a304ccda6e78d2a04790529
Author: Yuchuan Zhou <[email protected]>
Date: 2017-03-23T14:07:28Z
SOLR-10320: Perform secondary sort using both values in and outside Solr
index
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> Perform secondary sort using both values in and outside Solr index
> ------------------------------------------------------------------
>
> Key: SOLR-10320
> URL: https://issues.apache.org/jira/browse/SOLR-10320
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Yuchuan Zhou
>
> 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.
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