diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
index 1a1f5cda1fbfc4..bc7b5273c310f3 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
@@ -263,7 +263,7 @@ public ConnectContext(StreamConnection connection) {
             mysqlChannel = new DummyMysqlChannel();
         }
         sessionVariable = VariableMgr.newSessionVariable();
-        if (connection != null && isMajorVersionUpgrade) {
+        if (isMajorVersionUpgrade) {
             VariableMgr.setGlobalPipelineTask(sessionVariable.parallelExecInstanceNum);
             sessionVariable = VariableMgr.newSessionVariable();
         }