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From "Justus Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-998) BooleanQuery.setMaxClauseCount(int) is static
Date Wed, 11 Mar 2009 23:16:50 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681088#action_12681088
] 

Justus Pendleton commented on LUCENE-998:
-----------------------------------------

In our case, we are more concerned about the memory usage -- with queries being rewritten
to Boolean queries with over a hundred thousand clauses -- than the query execution time (though,
obviously the execution time is also likely to be a factor at some point when trying to keep
a UI responsive and not have hundreds of threads gathering massive result sets that are no
longer relevant).

We had a similar problem in the past with range queries and the introduction of the constant
range query solved that problem for us, so a constant score rewrite should also work in this
situation.

> BooleanQuery.setMaxClauseCount(int) is static
> ---------------------------------------------
>
>                 Key: LUCENE-998
>                 URL: https://issues.apache.org/jira/browse/LUCENE-998
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>    Affects Versions: 2.1
>            Reporter: Tim Lebedkov
>         Attachments: lucene-998.patch
>
>
> BooleanQuery.setMaxClauseCount(int) is static. It does not allow searching in multiple
indices from different threads using different settings. This setting should be probably moved
in to the IndexSearcher.

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