Revert "SERVER-40755 Expose statistics which indicate how many collection scans have executed"

This reverts commit a4ef14ef41f0700ef07e5b57b0345d2396a44604.

1 files changed, 0 insertions, 26 deletions

diff --git a/src/mongo/db/collection_index_usage_tracker.cpp b/src/mongo/db/collection_index_usage_tracker.cpp
index 3f78b3c406a..dc0941ff4c8 100644
--- a/src/mongo/db/collection_index_usage_tracker.cpp
+++ b/src/mongo/db/collection_index_usage_tracker.cpp
@@ -31,23 +31,12 @@
 
 #include "mongo/platform/basic.h"
 
-#include "mongo/base/counter.h"
 #include "mongo/db/collection_index_usage_tracker.h"
-#include "mongo/db/commands/server_status_metric.h"
 #include "mongo/util/assert_util.h"
 #include "mongo/util/clock_source.h"
 #include "mongo/util/log.h"
 
 namespace mongo {
-namespace {
-Counter64 collectionScansCounter;
-Counter64 collectionScansNonTailableCounter;
-
-ServerStatusMetricField<Counter64> displayCollectionScans("queryExecutor.collectionScans.total",
-                                                          &collectionScansCounter);
-ServerStatusMetricField<Counter64> displayCollectionScansNonTailable(
-    "queryExecutor.collectionScans.nonTailable", &collectionScansNonTailableCounter);
-}
 
 CollectionIndexUsageTracker::CollectionIndexUsageTracker(ClockSource* clockSource)
     : _clockSource(clockSource) {
@@ -61,17 +50,6 @@ void CollectionIndexUsageTracker::recordIndexAccess(StringData indexName) {
     _indexUsageMap[indexName].accesses.fetchAndAdd(1);
 }
 
-void CollectionIndexUsageTracker::recordCollectionScans(unsigned long long collectionScans) {
-    _collectionScans.fetchAndAdd(collectionScans);
-    collectionScansCounter.increment(collectionScans);
-}
-
-void CollectionIndexUsageTracker::recordCollectionScansNonTailable(
-    unsigned long long collectionScansNonTailable) {
-    _collectionScansNonTailable.fetchAndAdd(collectionScansNonTailable);
-    collectionScansNonTailableCounter.increment(collectionScansNonTailable);
-}
-
 void CollectionIndexUsageTracker::registerIndex(StringData indexName, const BSONObj& indexKey) {
     invariant(!indexName.empty());
     dassert(_indexUsageMap.find(indexName) == _indexUsageMap.end());
@@ -90,8 +68,4 @@ CollectionIndexUsageMap CollectionIndexUsageTracker::getUsageStats() const {
     return _indexUsageMap;
 }
 
-CollectionIndexUsageTracker::CollectionScanStats
-CollectionIndexUsageTracker::getCollectionScanStats() const {
-    return {_collectionScans.load(), _collectionScansNonTailable.load()};
-}
 }  // namespace mongo