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  1. Core Server
  2. SERVER-37037

Skip oplog construction in OpObserver on secondaries

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      We don't need to generate and write oplog entries in OpObserver on secondaries since the secondaries already copied them form the sync source. The check is at a low level right before writing the oplog entry to the disk. We can skip constructing oplog entries earlier for better performance.

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            Assignee:
            backlog-server-repl Backlog - Replication Team
            Reporter:
            siyuan.zhou Siyuan Zhou
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