1 files changed, 6 insertions, 11 deletions
diff --git a/src/mongo/db/pipeline/document_source_change_stream.h b/src/mongo/db/pipeline/document_source_change_stream.h
index 60013e64444..044623335ed 100644
--- a/src/mongo/db/pipeline/document_source_change_stream.h
+++ b/src/mongo/db/pipeline/document_source_change_stream.h
@@ -243,9 +243,13 @@ public:
 
     // Default regex for collections match which prohibits system collections.
     static constexpr StringData kRegexAllCollections = R"((?!(\$|system\.)))"_sd;
-    // Regex matching all regular collections plus certain system collections.
+
+    // Regex matching all user collections plus collections exposed when 'showSystemEvents' is set.
+    // Does not match a collection named $ or a collection with 'system.' in the name.
+    // However, it will still match collection names starting with system.buckets or a collection
+    // exactly named system.js.
     static constexpr StringData kRegexAllCollectionsShowSystemEvents =
-        R"((?!(\$|system\.(?!(js$)))))"_sd;
+        R"((?!(\$|system\.(?!(js$|buckets\.)))))"_sd;
 
     static constexpr StringData kRegexAllDBs = R"(^(?!(admin|config|local)\.)[^.]+)"_sd;
     static constexpr StringData kRegexCmdColl = R"(\$cmd$)"_sd;
@@ -283,15 +287,6 @@ public:
     static void checkValueType(Value v, StringData fieldName, BSONType expectedType);
 
     /**
-     * Extracts the resume token from the given spec. If a 'startAtOperationTime' is specified,
-     * returns the equivalent high-watermark token. This method should only ever be called on a spec
-     * where one of 'resumeAfter', 'startAfter', or 'startAtOperationTime' is populated.
-     */
-    static ResumeTokenData resolveResumeTokenFromSpec(
-        const boost::intrusive_ptr<ExpressionContext>& expCtx,
-        const DocumentSourceChangeStreamSpec& spec);
-
-    /**
      * For a change stream with no resume information supplied by the user, returns the clusterTime
      * at which the new stream should begin scanning the oplog.
      */