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https://issues.apache.org/jira/browse/CASSANDRA-19556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17845345#comment-17845345
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Sam Tunnicliffe edited comment on CASSANDRA-19556 at 5/10/24 1:14 PM:
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bq. personally i see no reason this needs to be in any 5.0.x
Not an absolute necessity, but it would be quite convenient to have it or
something similar,
as part of the preferred upgrade path to 5.1/6.0, as mentioned
[here|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-21%3A+Transactional+Cluster+Metadata#CEP21:TransactionalClusterMetadata-MigrationPlan]
was (Author: beobal):
bq. personally i see no reason this needs to be in any 5.0.x
Not an absolute necessity, but it would be quite convenient to have it or
something similar, as part of the preferred upgrade path to 5.1/6.0, as
mentioned
[here|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-21%3A+Transactional+Cluster+Metadata#CEP21:TransactionalClusterMetadata-MigrationPlan]
> Add guardrail to block DDL/DCL queries and replace alter_table_enabled
> guardrail
> --------------------------------------------------------------------------------
>
> Key: CASSANDRA-19556
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19556
> Project: Cassandra
> Issue Type: New Feature
> Components: Feature/Guardrails
> Reporter: Yuqi Yan
> Assignee: Yuqi Yan
> Priority: Normal
> Fix For: 5.0-rc, 5.x
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Sometimes we want to block DDL/DCL queries to stop new schemas being created
> or roles created. (e.g. when doing live-upgrade)
> For DDL guardrail current implementation won't block the query if it's no-op
> (e.g. CREATE TABLE...IF NOT EXISTS, but table already exists, etc. The
> guardrail check is added in apply() right after all the existence check)
> I don't have preference on either block every DDL query or check whether if
> it's no-op here. Just we have some users always run CREATE..IF NOT EXISTS..
> at startup, which is no-op but will be blocked by this guardrail and failed
> to start.
>
> 4.1 PR: [https://github.com/apache/cassandra/pull/3248]
> trunk PR: [https://github.com/apache/cassandra/pull/3275]
>
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