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https://issues.apache.org/jira/browse/CASSANDRA-17212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17525662#comment-17525662
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Andres de la Peña commented on CASSANDRA-17212:
-----------------------------------------------

[~jmckenzie] I'm not sure we want to always exclude system keyspaces. For 
example, we probably want to apply the guardrails for restrictions on IN 
queries even when querying system tables, since those queries can be quite 
harmful (see CASSANDRA-17187 and CASSANDRA-17186). I guess that our main reason 
to exclude system keyspaces in cases such as the guardrail for disabling 
{{ALLOW FILTERING}} is that drivers might internally use the guarded queries 
for doing their thing.

> Migrate threshold for minimum keyspace replication factor to guardrails
> -----------------------------------------------------------------------
>
>                 Key: CASSANDRA-17212
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17212
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Feature/Guardrails
>            Reporter: Andres de la Peña
>            Assignee: Savni Nagarkar
>            Priority: Normal
>             Fix For: 4.x
>
>
> The config property 
> [{{minimum_keyspace_rf}}|https://github.com/apache/cassandra/blob/5fdadb25f95099b8945d9d9ee11d3e380d3867f4/conf/cassandra.yaml]
>  that was added by CASSANDRA-14557 can be migrated to guardrails, for example:
> {code}
> guardrails:
>     ...
>     replication_factor:
>         warn_threshold: 2
>         abort_threshold: 3
> {code}



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