[CASSANDRA-6001] Add a Tracing line for index/seq scan queries

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 1.2.11
• Assignee: Lyuben Todorov
• Reporter: Jonathan Ellis

Authors

Lyuben Todorov

• Created: 10/Sep/13 21:28
• Updated: 16/Apr/19 09:32
• Resolved: 08/Oct/13 17:11

Description

Tracing should show the user why a specific index was selected. Something like

Index mean cardinality is {users_by_lastname: 100, users_by_state: 2000, users_by_birthdate: 1000}.  Scanning with users_by_lastname.