diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index cf0e9e8439..d5a6c7e0f7 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -741,11 +741,11 @@ public class SessionVariable implements Serializable, Writable {
         }
         // pull_request_id default value is 0
         if (Config.pull_request_id % 2 == 1) {
-            // this.enablePipelineEngine = true;
+            this.enablePipelineEngine = true;
             // this.enableFoldConstantByBe = true;
             // this.enableTwoPhaseReadOpt = false;
         } else {
-            // this.enablePipelineEngine = false;
+            this.enablePipelineEngine = false;
             // this.enableFoldConstantByBe = false;
             // this.enableTwoPhaseReadOpt = true;
         }