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Posted to issues@lucene.apache.org by "Chris M. Hostetter (Jira)" <ji...@apache.org> on 2022/08/05 00:06:00 UTC

[jira] [Commented] (LUCENE-10570) Monitor Presearcher to reject registration of "ANYTOKEN" queries

    [ https://issues.apache.org/jira/browse/LUCENE-10570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17575492#comment-17575492 ] 

Chris M. Hostetter commented on LUCENE-10570:
---------------------------------------------

FWIW: I've found that in practice, this kind of Presearcher wrapper is a good "last resort" safety net to prevent these queries from making into the Monitor – but because of how the Monitor API works to add+commit an entire batch all at once, it's really only efficient to register large batches of {{MonitorQuery}} , but if the Presearcher throws an exception, the entire batch fails.

 

What I've wound up doing is using this kind of Presearcher wrapper in my Monitor, but also pre-processing the queries (and redundently running them through the Presearcher individually before assembling my batches) to check them in advance.

> Monitor Presearcher to reject registration of  "ANYTOKEN" queries
> -----------------------------------------------------------------
>
>                 Key: LUCENE-10570
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10570
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/monitor
>            Reporter: Chris M. Hostetter
>            Priority: Major
>         Attachments: LUCENE-10570.patch
>
>
> I'm starting to do some work with Monitor, and one of the things i realized I was going to want is an easy way to detect Queries that result in {{ANYTOKEN}} style QueryIndex documents – requiring a "forward search" test against every future {{match(Document)}} call.
> The simplest solution I could come up with is a Presearcher "wrapper" – something that might be generally useful for other users – but I'm certainly open to other approaches.



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