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Sometimes the failover process may require a ____________ during operation.(a) savepoint(b) rollback(c) commit(d) none of the mentionedThis question was addressed to me in an online quiz.The above asked question is from Replica Set High Availability topic in division Replication Concepts, Processes and Replication Set of MongoDB

Answer»

Right choice is (b) rollback

Easiest explanation: A rollback reverts write OPERATIONS on a former primary when the MEMBER REJOINS its replica SET after a failover.



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