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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2018) Reconsider boolean max clause exception
Date Thu, 29 Oct 2009 18:49:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771554#action_12771554
] 

Yonik Seeley commented on LUCENE-2018:
--------------------------------------

Fuzzy query uses it to limit terms.  Any others?

> Reconsider boolean max clause exception
> ---------------------------------------
>
>                 Key: LUCENE-2018
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2018
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Mark Miller
>
> Now that we have smarter multi-term queries, I think its time to reconsider the boolean
max clause setting. It made more sense before, because you could hit it more unaware when
the multi-term queries got huge - now its more likely that if it happens its because a user
built the boolean themselves. And no duh thousands more boolean clauses means slower perf
and more resources needed. We don't throw an exception when you try to use a ton of resources
in a thousand other ways.
> The current setting also suffers from the static hell argument - especially when you
consider something like Solr's multicore feature - you can have different settings for this
in different cores, and the last one is going to win. Its ugly. Yes, that could be addressed
better in Solr as well - but I still think it should be less ugly in Lucene as well.
> I'd like to consider either doing away with it, or raising it by quite a bit at the least.
Or an alternative better solution. Right now, it aint so great.

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