lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael Busch (JIRA)" <>
Subject [jira] Commented: (LUCENE-2312) Search on IndexWriter's RAM Buffer
Date Tue, 16 Mar 2010 16:32:27 GMT


Michael Busch commented on LUCENE-2312:

think we simply need a way to publish byte arrays to all
threads? Michael B. can you post something of what you have so
we can get an idea of how your system will work (ie, mainly what
the assumptions are)?

It's kinda complicated to explain and currently differs from Lucene's TermHash classes a lot.
 I'd prefer to wait a little bit until I have verified that my solution works.

I think here we should really tackle LUCENE-2324 first - it's a prereq.  Wanna help with that,

> Search on IndexWriter's RAM Buffer
> ----------------------------------
>                 Key: LUCENE-2312
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Search
>    Affects Versions: 3.0.1
>            Reporter: Jason Rutherglen
>            Assignee: Michael Busch
>             Fix For: 3.1
> 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.
> 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: 

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:
For additional commands, e-mail:

View raw message