[CASSANDRA-9876] One way targeted repair

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.10
• Assignee: Geoffrey Yu
• Reporter: Sankalp Kohli

Authors

Geoffrey Yu

Reviewers

Paulo Motta

• Created: 23/Jul/15 00:30
• Updated: 16/Apr/19 09:31
• Resolved: 11/Aug/16 19:58

Description

Many applications use C* by writing to one local DC. The other DC is used when the local DC is unavailable. When the local DC becomes available, we want to run a targeted repair b/w one endpoint from each DC to minimize the data transfer over WAN. In this case, it will be helpful to do a one way repair in which data will only be streamed from other DC to local DC instead of streaming the data both ways. This will further minimize the traffic over WAN. This feature should only be supported if a targeted repair is run involving 2 hosts.

Issue Links

• is related to: CASSANDRA-6440 Repair should allow repairing particular endpoints to reduce WAN usage.