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https://issues.apache.org/jira/browse/LUCENE-2312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974264#action_12974264
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Jason Rutherglen commented on LUCENE-2312:
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bq. DocValues == column stride fields
Ok, that makes sense!
I'm going to leave this alone for now, however I agree that ideally we'd leave
TOVC alone and at a higher level intermix the ord and non-ord doc terms. It's
hard to immediately determine how that'd work given the slot concept, which
seems to be an ord or value per reader that's directly comparable? Is there an
example of mixing multiple comparators for a given field?
> 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
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