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https://issues.apache.org/jira/browse/CASSANDRA-13369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15993589#comment-15993589
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Ariel Weisberg commented on CASSANDRA-13369:
--------------------------------------------
||Code|utests|dtests||
|[3.11|https://github.com/apache/cassandra/compare/trunk...aweisberg:cassandra-13369-3.11?expand=1]|[utests|https://circleci.com/gh/aweisberg/cassandra/268]||
> If there are multiple values for a key, CQL grammar choses last value. This
> should not be silent or should not be allowed.
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-13369
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13369
> Project: Cassandra
> Issue Type: Bug
> Components: CQL
> Reporter: Nachiket Patil
> Assignee: Nachiket Patil
> Priority: Minor
> Attachments: 3.X.diff, trunk.diff
>
>
> If through CQL, multiple values are specified for a key, grammar parses the
> map and last value for the key wins. This behavior is bad.
> e.g.
> {code}
> CREATE KEYSPACE Excalibur WITH REPLICATION = {'class':
> 'NetworkTopologyStrategy', 'dc1': 2, 'dc1': 5};
> {code}
> Parsing this statement, 'dc1' gets RF = 5. This can be catastrophic, may even
> result in loss of data. This behavior should not be silent or not be allowed
> at all.
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