[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.

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.11.0, 4.0-alpha1, 4.0
• Component/s: Legacy/CQL
• Severity: Low
• Assignee: Nachiket Patil
• Reporter: Nachiket Patil

Authors

Nachiket Patil

Reviewers

Ariel Weisberg

• Created: 22/Mar/17 18:48
• Updated: 07/Mar/23 11:52
• Resolved: 08/May/17 20:52

Description

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.

CREATE KEYSPACE Excalibur WITH REPLICATION = {'class': 'NetworkTopologyStrategy', 'dc1': 2, 'dc1': 5};

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.