Search on IndexWriter's RAM Buffer ---------------------------------- Key: LUCENE-2312 URL: https://issues.apache.org/jira/browse/LUCENE-2312 Project: Lucene - Java Issue Type: New Feature Components: Search Affects Versions: 3.0.1 Reporter: Jason Rutherglen Fix For: 3.0.2
In order to offer user's near realtime search, without incurring an indexing performance penalty, we can implement search on IndexWriter's RAM buffer. This is the buffer that is filled in RAM as documents are indexed. Currently the RAM buffer is flushed to the underlying directory (usually disk) before being made searchable. Todays Lucene based NRT systems must incur the cost of merging segments, which can slow indexing. Michael Busch has good suggestions regarding how to handle deletes using max doc ids. https://issues.apache.org/jira/browse/LUCENE-2293?focusedCommentId=12841923&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12841923 The area that isn't fully fleshed out is the terms dictionary, which needs to be sorted prior to queries executing. Currently IW implements a specialized hash table. Michael B has a suggestion here: https://issues.apache.org/jira/browse/LUCENE-2293?focusedCommentId=12841915&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12841915 -- 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: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org