Add minimal sanity checks to custom/scripted similarities. (backport) #33893
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Add minimal sanity checks to custom/scripted similarities. Lucene 8 introduced more constraints on similarities, in particular: - scores must not be negative, - scores must not decrease when term freq increases, - scores must not increase when norm (interpreted as an unsigned long) increases. We can't check every single case, but could at least run some sanity checks. Backport of elastic#33564
jpountz
added
>enhancement
:Search Relevance/Ranking
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Pinging @elastic/es-search-aggs |
romseygeek
approved these changes
Sep 20, 2018
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| private static class SingleNormLeafReader extends LeafReader { | ||
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I do wonder if this class should be in a separate utility file somewhere? It's a third of the entire file length. On the other hand, this is all going away in master, so maybe it doesn't matter.
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Good point. I'll leave things this way though as master doesn't have the issue so it's not a big deal like you said.
jimczi
approved these changes
Sep 20, 2018
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Thanks @jimczi and @romseygeek |
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Add minimal sanity checks to custom/scripted similarities.
Lucene 8 introduced more constraints on similarities, in particular:
increases.
We can't check every single case, but could at least run some sanity checks.
Backport of #33564