diff --git a/src/validator/LookupValidator.cpp b/src/validator/LookupValidator.cpp
index f4f6acb00..2f4115422 100644
--- a/src/validator/LookupValidator.cpp
+++ b/src/validator/LookupValidator.cpp
@@ -148,7 +148,6 @@ StatusOr<Expression*> LookupValidator::handleLogicalExprOperands(LogicalExpressi
 }
 
 StatusOr<Expression*> LookupValidator::checkFilter(Expression* expr) {
-    // TODO: Support IN expression push down
     if (expr->isRelExpr()) {
         auto relExpr = static_cast<RelationalExpression*>(expr);
         NG_RETURN_IF_ERROR(checkRelExpr(relExpr));
diff --git a/tests/tck/features/lookup/TagIndexFullScan.feature b/tests/tck/features/lookup/TagIndexFullScan.feature
index 2945a49a8..586925e33 100644
--- a/tests/tck/features/lookup/TagIndexFullScan.feature
+++ b/tests/tck/features/lookup/TagIndexFullScan.feature
@@ -93,6 +93,7 @@ Feature: Lookup tag index full scan
       | 4  | TagIndexFullScan | 0            |                                           |
       | 0  | Start            |              |                                           |
 
+  # TODO: Support compare operator info that has multiple column hints
   Scenario: Tag with relational IN/NOT IN filter
     When profiling query:
       """
@@ -103,11 +104,10 @@ Feature: Lookup tag index full scan
       | "Jazz"    |
       | "Hornets" |
     And the execution plan should be:
-      | id | name             | dependencies | operator info                                          |
-      | 3  | Project          | 2            |                                                        |
-      | 2  | Filter           | 4            | {"condition": "(team.name IN [\"Hornets\",\"Jazz\"])"} |
-      | 4  | TagIndexFullScan | 0            |                                                        |
-      | 0  | Start            |              |                                                        |
+      | id | name      | dependencies | operator info |
+      | 3  | Project   | 4            |               |
+      | 4  | IndexScan | 0            |               |
+      | 0  | Start     |              |               |
     When executing query:
       """
       LOOKUP ON team WHERE team.name IN ["non-existed-name"]
@@ -125,11 +125,10 @@ Feature: Lookup tag index full scan
       | "Tony Parker"       | 36         |
       | "Boris Diaw"        | 36         |
     And the execution plan should be:
-      | id | name             | dependencies | operator info                            |
-      | 3  | Project          | 2            |                                          |
-      | 2  | Filter           | 4            | {"condition": "(player.age IN [39,36])"} |
-      | 4  | TagIndexFullScan | 0            |                                          |
-      | 0  | Start            |              |                                          |
+      | id | name      | dependencies | operator info |
+      | 3  | Project   | 4            |               |
+      | 4  | IndexScan | 0            |               |
+      | 0  | Start     |              |               |
     When profiling query:
       """
       LOOKUP ON team WHERE team.name NOT IN ["Hornets", "Jazz"]