SERVER-44599 Blacklist tests impacted by the sort optimization in multiversion suites

2 files changed, 18 insertions, 9 deletions

diff --git a/jstests/core/covered_index_sort_no_fetch_optimization.js b/jstests/core/covered_index_sort_no_fetch_optimization.js
index 5fc1e00f8ef..964da9d67db 100644
--- a/jstests/core/covered_index_sort_no_fetch_optimization.js
+++ b/jstests/core/covered_index_sort_no_fetch_optimization.js
@@ -1,10 +1,16 @@
-// Confirms that blocking sorts are covered when the index contains the sort key.
-// For example, if we have an index on {a:1, b:1} and a sort on {b:1}, and a projection of only
-// field 'b', we can sort using only the existing index keys, without needing to do a fetch.
-
-// Queries on a sharded collection can't be covered when they aren't on the shard key. The document
-// must be fetched to support the SHARDING_FILTER stage.
-// @tags: [assumes_unsharded_collection]
+/**
+ * Confirms that blocking sorts are covered when the index contains the sort key. For example, if we
+ * have an index on {a:1, b:1} and a sort on {b:1}, and a projection of only field 'b', we can sort
+ * using only the existing index keys, without needing to do a fetch.
+ *
+ * Queries on a sharded collection can't be covered when they aren't on the shard key. The document
+ * must be fetched to support the SHARDING_FILTER stage.
+ * @tags: [
+ *  assumes_unsharded_collection,
+ *  # Sort optimizations added for hashed indexes in 4.6 can generate a different plan.
+ *  requires_fcv_46
+ * ]
+ */
 (function() {
 "use strict";
 
diff --git a/jstests/core/hashed_index_sort.js b/jstests/core/hashed_index_sort.js
index f4119fd5ae1..eeaf793904c 100644
--- a/jstests/core/hashed_index_sort.js
+++ b/jstests/core/hashed_index_sort.js
@@ -3,7 +3,10 @@
  * the 'find' command. The test verifies compound hashed index with hashed prefix and non-hashed
  * prefix.
  * @tags: [
- *   assumes_unsharded_collection,
+ *  assumes_unsharded_collection,
+ *  # Sort optimizations added in 4.6 can generate a different plan in the presence of equality
+ *  # predicates.
+ *  requires_fcv_46
  * ]
  */
 (function() {
@@ -194,4 +197,4 @@ validateFindCmdOutputAndPlan({
     expectedOutput: [{c: 2}],
     expectedStages: ["IXSCAN", "FETCH", "SORT"]
 });
-})();
\ No newline at end of file
+})();