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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2009/10/29 19:45:59 UTC

[jira] Commented: (LUCENE-2018) Reconsider boolean max clause exception

    [ https://issues.apache.org/jira/browse/LUCENE-2018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771547#action_12771547 ] 

Michael McCandless commented on LUCENE-2018:
--------------------------------------------

I think removing it makes sense?

> 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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