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Date: Thu, 29 Oct 2009 18:15:59 +0000 (UTC)
From: "Mark Miller (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Created: (LUCENE-2018) Reconsider boolean max clause
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Reconsider boolean max clause exception
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                 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 it because a user built the boolean themselves. And no duh thousands more boolean queries means slower perf and more resources needed. When don't throw an exception when you try in 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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