Documentation Request Summary:

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Engineering Ticket Description:

Collection drops are deferred until commit point advances to or past optime of drop operation. For database drops, we wait until all the collection drops are committed. While we are waiting for the collection drops to be committed, any writes to the database will be rejected. While the collection drop oplog entries are written to the oplog before they enter the drop-pending state, the dropDatabase oplog entry is only written to the oplog when all the collection drops are committed.