[CASSANDRA-2717] duplicate rows returned from SELECT where KEY term is duplicated

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.8.3
• Labels: cql lhf
• Severity: Low
• Assignee: James P. Ancona
• Reporter: Aaron Morton

Authors

James P. Ancona

Reviewers

Pavel Yaskevich

• Created: 27/May/11 02:48
• Updated: 16/Apr/19 09:32
• Resolved: 27/Jul/11 20:04

Description

Noticed while working on CASSANDRA-2268 when random keys generated during a mutli_get test contain duplicate keys.

The thrift multiget_slice() returns only the unique rows because of the map generated for the result.

CQL will return a row for each KEY term in the SELECT.

I could make QueryProcessor.getSlice() only create commands for the unique keys if we wanted to.

Not sure it's a bug and it's definitely not something that should come up to often, reporting it because it's different to the thrift mutli_get operation.

Happy to close if it's by design.