d20003| 2017-10-09T18:08:53.972-0400 I REPL     [rsBackgroundSync] scheduling fetcher to read remote oplog on robert-macbook-pro.local:20001 starting at filter: { ts: { $gte: Timestamp 1507586707000|12 } }
d20003| 2017-10-09T18:08:53.973-0400 I REPL     [rsBackgroundSync] Starting rollback due to OplogStartMissing: Our last op time fetched: { ts: Timestamp 1507586707000|12, t: 1 }. source's GTE: { ts: Timestamp 1507586718000|1, t: 2 } hashes: (-3080319662268009517/5545839650998093505)
d20003| 2017-10-09T18:08:53.973-0400 I REPL     [rsBackgroundSync] Replication commit point: { ts: Timestamp 1507586706000|4, t: 1 }
d20003| 2017-10-09T18:08:53.973-0400 I REPL     [rsBackgroundSync] Rollback using the 'rollbackViaRefetch' method due to startup server parameter.
d20003| 2017-10-09T18:08:53.973-0400 I REPL     [rsBackgroundSync] transition to ROLLBACK
d20003| 2017-10-09T18:08:53.973-0400 I NETWORK  [rsBackgroundSync] Skip closing connection for connection # 35
d20003| 2017-10-09T18:08:53.973-0400 I NETWORK  [rsBackgroundSync] Skip closing connection for connection # 34
d20003| 2017-10-09T18:08:53.974-0400 I NETWORK  [conn77] end connection 10.4.127.25:59759 (2 connections now open)
d20003| 2017-10-09T18:08:53.974-0400 I ROLLBACK [rsBackgroundSync] Starting rollback. Sync source: robert-macbook-pro.local:20001
b20001| 2017-10-09T18:08:53.975-0400 I NETWORK  [main] connection accepted from 10.4.127.25:59760 #70 (1 connection now open)
d20004| 2017-10-09T18:08:53.975-0400 I NETWORK  [listener] connection accepted from 10.4.127.25:59761 #71 (8 connections now open)
d20004| 2017-10-09T18:08:53.975-0400 I NETWORK  [conn71] received client metadata from 10.4.127.25:59761 conn: { driver: { name: "MongoDB Internal Client", version: "3.5.13-325-g155db50-patch-59d98345e3c331107a001198" }, os: { type: "Darwin", name: "Mac OS X", architecture: "x86_64", version: "17.0.0" } }
d20003| 2017-10-09T18:08:53.976-0400 I ROLLBACK [rsBackgroundSync] Finding the Common Point
d20003| 2017-10-09T18:08:53.976-0400 I ROLLBACK [rsBackgroundSync] our last optime:   Oct  9 18:05:07:c
d20003| 2017-10-09T18:08:53.976-0400 I ROLLBACK [rsBackgroundSync] their last optime: Oct  9 18:05:19:34
d20003| 2017-10-09T18:08:53.976-0400 I ROLLBACK [rsBackgroundSync] diff in end of log times: -12 seconds
d20003| 2017-10-09T18:08:53.977-0400 I ROLLBACK [rsBackgroundSync] Rollback common point is { ts: Timestamp 1507586706000|4, t: 1 }
d20003| 2017-10-09T18:08:53.977-0400 I ROLLBACK [rsBackgroundSync] Starting refetching documents
d20003| 2017-10-09T18:08:53.977-0400 D ROLLBACK [rsBackgroundSync] Refetching document, namespace: test.one, _id: _id: "ISKRjIN6"
d20003| 2017-10-09T18:08:53.977-0400 I ROLLBACK [rsBackgroundSync] Finished refetching documents. Total size of documents refetched: 1
d20003| 2017-10-09T18:08:53.977-0400 I ROLLBACK [rsBackgroundSync] Checking the RollbackID and updating the MinValid if necessary
d20003| 2017-10-09T18:08:53.977-0400 I ROLLBACK [rsBackgroundSync] Setting minvalid to { ts: Timestamp 1507586719000|52, t: 2 }
d20003| 2017-10-09T18:08:53.978-0400 I ROLLBACK [rsBackgroundSync] Dropping collections to roll back create operations
d20003| 2017-10-09T18:08:53.978-0400 E -        [rsBackgroundSync] Assertion: 28539:need a valid database name src/mongo/db/concurrency/d_concurrency.cpp 198
d20003| 2017-10-09T18:08:53.982-0400 W ROLLBACK [rsBackgroundSync] Rollback cannot complete at this time (retrying later): Location28539: need a valid database name appliedThrough= { ts: Timestamp 1507586707000|12, t: 1 } minvalid= { ts: Timestamp 1507586719000|52, t: 2 }