Execution Team 2020-04-06, Execution Team 2020-04-20, Execution Team 2020-05-04
Currently, with the commit quorum on, the problem mentioned in SERVER-46397 gets happened a lot. So, we turn off the commit quorum for concurrency suites. Once SERVER-46397 is fixed, we will enable the commit quorum on.
SERVER-46397concurrent dropIndexes on a primary can stall replication on secondaries
SERVER-46823Enable default for index commit quorum as "votingMembers"