[CASSANDRA-13263] Incorrect ComplexColumnData hashCode implementation

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.15, 3.11.1, 4.0-alpha1, 4.0
• Severity: Normal
• Assignee: Stefan Podkowinski
• Reporter: Stefan Podkowinski

Authors

Stefan Podkowinski

Reviewers

Sylvain Lebresne

• Created: 24/Feb/17 11:51
• Updated: 15/May/20 08:06
• Resolved: 05/Sep/17 11:04

Description

I went through some of the logs from CASSANDRA-13175 and one of the more serious issues that we should address seem to be the ComplexColumnData.hashCode() implementation. As Objects.hashCode is not using deep hashing for array arguments, hashed will be based on the identity instead of the array's content. See patch for simple fix.