[CASSANDRA-14668] Diag events for read repairs

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Component/s: Legacy/Observability
• Assignee: Stefan Podkowinski
• Reporter: Stefan Podkowinski

Authors

Stefan Podkowinski

Reviewers

Michael Semb Wever

• Created: 27/Aug/18 11:44
• Updated: 15/May/20 08:05
• Resolved: 31/Aug/18 17:51

Description

Read repairs have been a highly discussed topic during the last months and also saw some significant code changes. I'd like to be better prepared in case we need to investigate any further RR issues in the future, by adding diagnostic events that can be enabled for exposing informations such as:

• contacted endpoints
• digest responses by endpoint
• affected partition keys
• speculated reads / writes