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From "Mark Miller (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3141) Deprecate OPTIMIZE command in Solr
Date Sun, 19 Feb 2012 16:36:41 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211401#comment-13211401
] 

Mark Miller commented on SOLR-3141:
-----------------------------------

bq. With Lucene 3.x there is really no slowdown at all caused by multiple segments, as each
segment is searched on its own with no interaction and just the results added to same priority
queue.

Do we have benchmarks for this in some issue - would love to see some numbers. 

So, in the past, sorting certainly added a cost to multiple segments as you moved from segment
to segment - did that go away in some issue? That must be completely different code these
days if 100 segments or more performs like one.

                
> Deprecate OPTIMIZE command in Solr
> ----------------------------------
>
>                 Key: SOLR-3141
>                 URL: https://issues.apache.org/jira/browse/SOLR-3141
>             Project: Solr
>          Issue Type: Improvement
>          Components: update
>    Affects Versions: 3.5
>            Reporter: Jan H√łydahl
>              Labels: force, optimize
>             Fix For: 3.6
>
>
> Background: LUCENE-3454 renames optimize() as forceMerge(). Please read that issue first.
> Now that optimize() is rarely necessary anymore, and renamed in Lucene APIs, what should
be done with Solr's ancient optimize command?

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