[CASSANDRA-14555] Verify effect of CASSANDRA-14252 on streaming endpoint selection

• Type: Task
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Legacy/Streaming and Messaging
• Assignee: Unassigned
• Reporter: Sam Tunnicliffe
• Created: 03/Jul/18 07:12
• Updated: 07/Mar/23 10:53

Description

CASSANDRA-14252 makes a slight change to DynamicEndpointSnitch so that it is somewhat more likely a replica in a remote DC is contacted when replicas in the local DC are considered degraded. This seems reasonable on the read path, but it could also affect selection of endpoints for streaming and cross DC streaming is probably something that operators want to control more tightly. To be clear, I’m not 100% sure that this is actually an issue, but I’d like to have some investigation into it before we ship a change to default behaviour.

Issue Links

• is related to: CASSANDRA-14252 Use zero as default score in DynamicEndpointSnitch