[ https://issues.apache.org/jira/browse/LUCENE-2369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Toke Eskildsen updated LUCENE-2369: ----------------------------------- Attachment: LUCENE-2369.patch Preliminary patch with the primary purpose of testing the viability of this issue. Create a Lucene flex index (Version.40+) and call java -cp build/lucene-core-4.0-dev.jar org.apache.lucene.search.exposed.poc.ExposedPOC to test. > Locale-based sort by field with low memory overhead > --------------------------------------------------- > > Key: LUCENE-2369 > URL: https://issues.apache.org/jira/browse/LUCENE-2369 > Project: Lucene - Java > Issue Type: New Feature > Components: Search > Reporter: Toke Eskildsen > Priority: Minor > Attachments: LUCENE-2369.patch > > > The current implementation of locale-based sort in Lucene uses the FieldCache > which keeps all sort terms in memory. Beside the huge memory overhead, > searching requires comparison of terms with collator.compare every time, > making searches with millions of hits fairly expensive. > This proposed alternative implementation is to create a packed list of > pre-sorted ordinals for the sort terms and a map from document-IDs to entries > in the sorted ordinals list. This results in very low memory overhead and > faster sorted searches, at the cost of increased startup-time. As the > ordinals can be resolved to terms after the sorting has been performed, this > approach supports fillFields=true. > This issue is related to https://issues.apache.org/jira/browse/LUCENE-2335 > which contain previous discussions on the subject. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org