MongoDB 3.4.1-rc0 is out and is ready for testing. This is a release candidate containing only fixes since 3.4.0. The next stable release 3.4.1 will be a recommended upgrade for all 3.4 users.
Fixed in this release:
SERVER-27124 Disallow readConcern:majority reads on pv0
SERVER-27201 $graphLookup triggers null pointer dereference
SERVER-27207 Find on view with sort through mongos may incorrectly return empty result set
SERVER-27213 Two $match stages combine incorrectly, yielding incorrect results.
SERVER-27300 Disallow indexing of BSONType::Symbol with a non-simple collation
SERVER-27210 3.4.0 mongo shell unable to connect using MongoURI with "ssl=true"
SERVER-27271 rolesInfo command raises System.InvalidOperationException : Duplicate element name 'roles'.
SERVER-26870 Sometimes collection data file is not removed even though collection is dropped
TOOLS-1541 Support exporting views
As always, please let us know of any issues.
– The MongoDB Team