[jira] Commented: (LUCENE-982) Create new method optimize(int maxNumSegments) in IndexWriter

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12520280 ] 

Yonik Seeley commented on LUCENE-982:
-------------------------------------

+1
 sounds like a great idea.

> Create new method optimize(int maxNumSegments) in IndexWriter
> -------------------------------------------------------------
>
>                 Key: LUCENE-982
>                 URL: https://issues.apache.org/jira/browse/LUCENE-982
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.3
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.3
>
>
> Spinning this out from the discussion in LUCENE-847.
> I think having a way to "slightly optimize" your index would be useful
> for many applications.
> The current optimize() call is very expensive for large indices
> because it always optimizes fully down to 1 segment.  If we add a new
> method which instead is allowed to stop optimizing once it has <=
> maxNumSegments segments in the index, this would allow applications to
> eg optimize down to say <= 10 segments after doing a bunch of updates.
> This should be a nice compromise of gaining good speedups of searching
> while not spending the full (and typically very high) cost of
> optimizing down to a single segment.
> Since LUCENE-847 is now formalizing an API for decoupling merge policy
> from IndexWriter, if we want to add this new optimize method we need
> to take it into account in LUCENE-847.

-- 
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-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org