spellcheck.count has confusing default and documentation
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Key: SOLR-1676
URL: https://issues.apache.org/jira/browse/SOLR-1676
Project: Solr
Issue Type: Bug
Components: spellchecker
Affects Versions: 1.4
Reporter: Daniel Naber
Priority: Minor
It seems spellcheck.count does not just limit the number of results returned,
as the documentation claims. Instead, this value is given to the Lucene
SpellChecker class which multiplies it by 10 and then only fetches the first
spellcheck.count*10 candidates, ignoring all others. The effect is that with a
low value for spellcheck.count you might miss good hits. In other words, the
first item with spellcheck.count==1 is not always the same item as with e.g.
spellcheck.count==10.
The fix could be to fix the documentation (the comments in the sample
solrconfig.xml) to mention this and use a better default.
The Lucene SpellChecker class says about the numSug parameter: "Thus, you
should set this value to *at least* 5 for a good suggestion."
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