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-rw-r--r--src/mongo/db/s/sharding_statistics.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mongo/db/s/sharding_statistics.h b/src/mongo/db/s/sharding_statistics.h
index 7aae7a24501..79547043949 100644
--- a/src/mongo/db/s/sharding_statistics.h
+++ b/src/mongo/db/s/sharding_statistics.h
@@ -95,6 +95,10 @@ struct ShardingStatistics {
// due to concurrent index operations.
AtomicWord<long long> countDonorMoveChunkAbortConflictingIndexOperation{0};
+ // Total number of migrations leftover from previous primaries that needs to be run to
+ // completion. Valid only when this process is the repl set primary.
+ AtomicWord<long long> unfinishedMigrationFromPreviousPrimary{0};
+
/**
* Obtains the per-process instance of the sharding statistics object.
*/