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https://issues.apache.org/jira/browse/CASSANDRA-15775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17105070#comment-17105070
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Jeremy Hanna commented on CASSANDRA-15775:
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See CASSANDRA-8303 which generalizes this.  The problem though is that allow 
filtering has two purposes - first, it allows you to scan over multiple 
partitions which is almost always bad.  Second it is needed if you are scanning 
through a partition.  See CASSANDRA-15803 for a proposal to separate out the 
first from the second case.

> Configuration to disallow queries with "allow filtering"
> --------------------------------------------------------
>
>                 Key: CASSANDRA-15775
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15775
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Legacy/Local Write-Read Paths
>            Reporter: Christian Fredriksson
>            Priority: Normal
>
> Problem: We have inexperienced developers not following guidelines or best 
> pratices who do queries with "allow filtering" which have negative impact on 
> performance on other queries and developers.
> It would be beneficial to have a (server side) configuration to disallow 
> these queries altogether.



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