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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2019/07/15 13:49:00 UTC
[jira] [Resolved] (LUCENE-8810) Flattening of nested disjunctions
does not take into account number of clause limitation of builder
[ https://issues.apache.org/jira/browse/LUCENE-8810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand resolved LUCENE-8810.
----------------------------------
Resolution: Fixed
Fix Version/s: (was: 8.1.1)
8.2
> Flattening of nested disjunctions does not take into account number of clause limitation of builder
> ---------------------------------------------------------------------------------------------------
>
> Key: LUCENE-8810
> URL: https://issues.apache.org/jira/browse/LUCENE-8810
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 8.0
> Reporter: Mickaël Sauvée
> Priority: Minor
> Fix For: 8.2
>
> Attachments: LUCENE-8810.patch
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> In org.apache.lucene.search.BooleanQuery, at the end of the function rewrite(IndexReader reader), the query is rewritten to flatten nested disjunctions.
> This does not take into account the limitation on the number of clauses in a builder (1024).
> In some circumstances, this limite can be reached, hence an exception is thrown.
> Here is a unit test that highlight this.
> {code:java}
> public void testFlattenInnerDisjunctionsWithMoreThan1024Terms() throws IOException {
> IndexSearcher searcher = newSearcher(new MultiReader());
> BooleanQuery.Builder builder1024 = new BooleanQuery.Builder();
> for(int i = 0; i < 1024; i++) {
> builder1024.add(new TermQuery(new Term("foo", "bar-" + i)), Occur.SHOULD);
> }
> Query inner = builder1024.build();
> Query query = new BooleanQuery.Builder()
> .add(inner, Occur.SHOULD)
> .add(new TermQuery(new Term("foo", "baz")), Occur.SHOULD)
> .build();
> searcher.rewrite(query);
> }
> {code}
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