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https://issues.apache.org/jira/browse/CASSANDRA-6559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261329#comment-14261329
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Philip Thompson commented on CASSANDRA-6559:
--------------------------------------------

 The warning text should probably be printed immediately, before the result 
set. If the query really is that large, they'll notice from how long it takes 
to filter that its problematic. The problem with ALLOW FILTERING is that it 
looks fine with small result sets, before moving to production.

> cqlsh should warn about ALLOW FILTERING
> ---------------------------------------
>
>                 Key: CASSANDRA-6559
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6559
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>            Reporter: Tupshin Harper
>            Priority: Minor
>              Labels: cqlsh
>             Fix For: 2.0.12
>
>
> ALLOW FILTERING can be a convenience for preliminary exploration of your 
> data, and can be useful for batch jobs, but it is such an anti-pattern for 
> regular production queries, that cqlsh should provie an explicit warn 
> ingwhenever such a query is performed.



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