[COUCHDB-3150] Update all shards with stale=update_after

• Type: Story
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: Database Core
• Assignee: Unassigned
• Reporter: Bala Kolla
• Created: 15/Sep/16 20:35
• Updated: 30/Nov/16 13:56
• Resolved: 28/Sep/16 21:08

Description

Stale=update_after should update shards that won't participate in the response due to not being a ushard.

Discussed with Paul Davis and he suggested the following approach.

For this ticket we should just need to add a fabric_view:maybe_update_others/3 that we call just after [1,2] with fabric_view:maybe_update_others(DbName, Shards, Args). And then if stable=true and update=(true or lazy) we do mem3:shards(DbName) – ShardsInvolved, and throw a message at them to trigger an update.

[1] https://github.com/apache/couchdb-fabric/blob/master/src/fabric_view_map.erl#L27
[2] https://github.com/apache/couchdb-fabric/blob/master/src/fabric_view_reduce.erl#L28

Issue Links

• links to: GitHub Pull Request #57
• links to: GitHub Pull Request #60
• links to: GitHub Pull Request #70
• links to: GitHub Pull Request #76