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Deepika Sharma commented on LUCENE-10151: ----------------------------------------- I am exploring adding timeout support to the {{IndexSearcher}} by using {{ExitableDirectoryReader.}} However, one issue with {{ExitableDirectoryReader}} is that it enforces timeout checking at the time of instantiating {{BulkScorer}} and doesn't actually enforce it once you start iterating postings/impacts. This is being discussed in [LUCENE-10544|https://issues.apache.org/jira/browse/LUCENE-10544] I want to ask if there are any suggestions on alternative ways to approach this problem that I should consider?{{{}{}}} > Add timeout support to IndexSearcher > ------------------------------------ > > Key: LUCENE-10151 > URL: https://issues.apache.org/jira/browse/LUCENE-10151 > Project: Lucene - Core > Issue Type: Improvement > Components: core/search > Reporter: Greg Miller > Priority: Minor > > I'd like to explore adding optional "timeout" capabilities to > {{IndexSearcher}}. This would enable users to (optionally) specify a maximum > time budget for search execution. If the search "times out", partial results > would be available. > This idea originated on the dev list (thanks [~jpountz] for the suggestion). > Thread for reference: > [http://mail-archives.apache.org/mod_mbox/lucene-dev/202110.mbox/%3CCAL8PwkZdNGmYJopPjeXYK%3DF7rvLkWon91UEXVxMM4MeeJ3UHxQ%40mail.gmail.com%3E] > > A couple things to watch out for with this change: > # We want to make sure it's robust to a two-phase query evaluation scenario > where the "approximate" step matches a large number of candidates but the > "confirmation" step matches very few (or none). This is a particularly tricky > case. > # We want to make sure the {{TotalHits#Relation}} reported by {{TopDocs}} is > {{GREATER_THAN_OR_EQUAL_TO}} if the query times out > # We want to make sure it plays nice with the {{LRUCache}} since it iterates > the query to pre-populate a {{BitSet}} when caching. That step shouldn't be > allowed to overrun the timeout. The proper way to handle this probably needs > some thought. -- This message was sent by Atlassian Jira (v8.20.7#820007) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org