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Jason Rutherglen commented on LUCENE-2312: ------------------------------------------ bq. Obtaining a normal fieldcache entry should work the same on an RT reader as any other reader Yes. I'm still confused as to how DocValues fits into all of this. bq. TOVC should continue to work as it does today It should, otherwise there'll be performance considerations. The main proposal here is incrementally updating FC values and how to continue to use DocTermsIndex for non-RT readers mixed with DocTerms for RT readers, either in TOVC or somewhere else. > 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: Realtime Branch > Reporter: Jason Rutherglen > Assignee: Michael Busch > Fix For: Realtime Branch > > Attachments: LUCENE-2312-FC.patch, LUCENE-2312.patch > > > 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: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org