Add Solr/Lucene migration correctness blog post#178
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epugh merged 1 commit intoMay 3, 2026
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I am a big fan of the thinking behind this blog post. |
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Hasn't been published yet: https://solr.apache.org/blog.html |
dsmiley
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May 20, 2026
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| Major Solr/Lucene upgrades can introduce subtle ranking behavior changes even when functional tests continue to pass. This article discusses a practical side-by-side validation approach for detecting candidate-set changes, rank deltas, score distribution drift, and latency differences during migration testing. | ||
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| The complete post can be read here: [Validating Ranking Correctness During Solr/Lucene Migrations](https://dzone.com/articles/solr5-to-solr8-migration-ads-system). |
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I'm surprised this doesn't link to the comparison tool as well, which also has the detailed checklist.
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Thanks David. I opened a small follow-up PR to add the companion harness/checklist link as suggested.
#185
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I published the site this morning for some other edits, so now this is also live 🚀 |
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This PR adds a Solr blog entry linking to an external article on validating ranking correctness during major Solr/Lucene migrations.
The article discusses a practical side-by-side validation approach for detecting ranking behavior drift, including candidate overlap changes, rank deltas, score distribution drift, and latency differences across Solr/Lucene versions.