[OAK-759] MongoMK: read from a secondary member when possible

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.19
• Component/s: mongomk
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 08/Apr/13 10:42
• Updated: 22/Apr/14 12:14
• Resolved: 05/Mar/14 15:13

Description

Currently, the MongoMK needs to always read from the MongoDB primary in a replica set. To improve read performance, reads should be distributed to all members in a replica set.

One possible solution is: if old data is read, then reading from any member is allowed (see also MongoDB ReadPreference).

Issue Links

• is related to: OAK-1645 Route find queries to Mongo secondary in MongoDocumentStore