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https://issues.apache.org/jira/browse/SOLR-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537480
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Sean Timm commented on SOLR-392:
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This is related to LUCENE-997 "Add search timeout support to Lucene".
> Way to control search time, hits, and memory usage
> --------------------------------------------------
>
> Key: SOLR-392
> URL: https://issues.apache.org/jira/browse/SOLR-392
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Reporter: Lance Norskog
> Priority: Minor
>
> It would be good for end-user applications if Solr allowed searches to time
> out. It is possible now for the servlet container to throw a timeout
> exception. It would be very useful if the Solr search request timeout offered
> these features:
> 1) timeout: stop searching after N milliseconds and return results using only
> those hits already found
> 2) hit limit: stop searching after N milliseconds and return results using
> only those hits already found
> 3) ram limit: estimate the amount of ram used so far and stop searching at a
> given amount
> In all cases it would be very useful to estimate the remaining results to any
> degree of accuracy.
> Argument for estimation:
> For an extreme example, Google clearly does not finish any search that is
> more than the requested return value. Instead it returns very quickly on any
> search and overestimates all searches. If the first page says there are five
> pages, the second will often say that there are four pages instead. The third
> page will say "3 out of 3".
> Argument for 'timeout' control: we've all waited too long for searches
> Argument for 'hit limit' control:
> I really don't need to know that I'll have 14 thousand results. I'm not going
> to view them all.
> Argument for 'ram limit' control:
> Over-complex queries can cause Java OutOfMemory errors, and Tomcat does not
> recover gracefully.
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