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https://issues.apache.org/jira/browse/CASSANDRA-13426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960783#comment-15960783
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Aleksey Yeschenko commented on CASSANDRA-13426:
-----------------------------------------------

Progress-wise, applying some finishing touches here.

> Make all DDL statements idempotent and not dependent on global state
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-13426
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13426
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Distributed Metadata
>            Reporter: Aleksey Yeschenko
>            Assignee: Aleksey Yeschenko
>             Fix For: 4.0
>
>
> A follow-up to CASSANDRA-9425 and a pre-requisite for CASSANDRA-10699.
> It's necessary for the latter to be able to apply any DDL statement several 
> times without side-effects. As part of the ticket I think we should also 
> clean up validation logic and our error texts. One example is varying 
> treatment of missing keyspace for DROP TABLE/INDEX/etc. statements with IF 
> EXISTS.



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