SERVER-34192 Allow secondary reads during batch applications

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mongo/db/repl/replication_coordinator_external_state.h b/src/mongo/db/repl/replication_coordinator_external_state.h
index 5ab2ab1c20f..b9cd7dee465 100644
--- a/src/mongo/db/repl/replication_coordinator_external_state.h
+++ b/src/mongo/db/repl/replication_coordinator_external_state.h
@@ -249,6 +249,13 @@ public:
     virtual void updateCommittedSnapshot(const OpTime& newCommitPoint) = 0;
 
     /**
+     * Updates the local snapshot to a consistent point for secondary reads.
+     *
+     * It is illegal to call with a optime that does not name an existing snapshot.
+     */
+    virtual void updateLocalSnapshot(const OpTime& optime) = 0;
+
+    /**
      * Returns whether or not the SnapshotThread is active.
      */
     virtual bool snapshotsEnabled() const = 0;