[
https://issues.apache.org/jira/browse/LUCENE-2312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12845729#action_12845729
]
Jason Rutherglen commented on LUCENE-2312:
------------------------------------------
{quote}but my goal is it here to implement a non-blocking and
lock-free algorithm. So my idea was it to make use of a very
subtle behavior of volatile variables. {quote}
You're talking about having a per thread write buffer byte
array, that on search gets copied into a read only array, or
gets transformed magically into a volatile byte array? (Do
volatile byte arrays work? I couldn't find a clear answer on the
net, maybe it's stated in the Goetz book). If volatile byte
arrays do work, an option to test would be a byte buffer pool
that uses volatile byte arrays?
> 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
> 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.
> 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
