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https://issues.apache.org/jira/browse/CASSANDRA-21510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Muzafarov updated CASSANDRA-21510:
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Fix Version/s: 6.x
7.x
> DROP USER statement reject unreserved keywords as names, breaking existing
> users after any new CQL keyword is added
> -------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-21510
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21510
> Project: Apache Cassandra
> Issue Type: Bug
> Reporter: Maxim Muzafarov
> Assignee: Maxim Muzafarov
> Priority: Normal
> Fix For: 6.x, 7.x
>
>
> The username and identity grammar rules in Parser.g accept only IDENT |
> STRING_LITERAL:
> {code}
> username
> : IDENT
> | STRING_LITERAL
> | QUOTED_NAME { addRecognitionError(...) }
> ;
> {code}
>
> By contrast, the roleName rule additionally accepts unreserved_keyword.
> Consequently, whenever a word is promoted to an unreserved keyword in the
> lexer, tokenisation as IDENT stops. Any existing user or identity with that
> name silently loses access to the USER/IDENTITY statement forms after an
> upgrade.
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