[jira] [Updated] (CASSANDRA-13369) If there are multiple values for a key, CQL grammar choses last value. This should not be silent or should not be allowed.

["Ariel Weisberg (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-13369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ariel Weisberg updated CASSANDRA-13369:
---------------------------------------
    Reviewer: Ariel Weisberg

> 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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