diff --git a/fe/fe-core/src/main/java/org/apache/doris/common/Config.java b/fe/fe-core/src/main/java/org/apache/doris/common/Config.java
index 50c677013a..c1bfb504e7 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/common/Config.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/common/Config.java
@@ -1894,5 +1894,11 @@ public class Config extends ConfigBase {
      */
     @ConfField(mutable = false, masterOnly = false)
     public static long external_cache_expire_time_minutes_after_access = 24 * 60; // 1 day
+
+    /**
+     * Set session variables randomly to check more issues in github workflow
+     */
+    @ConfField(mutable = true, masterOnly = false)
+    public static boolean use_fuzzy_session_variable = false;
 }
 
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 6a9e16d9fb..03c75400de 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
@@ -21,6 +21,7 @@ import org.apache.doris.analysis.UserIdentity;
 import org.apache.doris.catalog.DatabaseIf;
 import org.apache.doris.catalog.Env;
 import org.apache.doris.cluster.ClusterNamespace;
+import org.apache.doris.common.Config;
 import org.apache.doris.common.UserException;
 import org.apache.doris.common.telemetry.Telemetry;
 import org.apache.doris.common.util.DebugUtil;
@@ -213,6 +214,9 @@ public class ConnectContext {
             remoteIP = mysqlChannel.getRemoteIp();
         }
         queryDetail = null;
+        if (Config.use_fuzzy_session_variable) {
+            sessionVariable.initFuzzyModeVariables();
+        }
     }
 
     public boolean isTxnModel() {
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 f40b8bfcfb..e28e454512 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
@@ -38,6 +38,7 @@ import java.io.Serializable;
 import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Random;
 
 /**
  * System variable.
@@ -588,6 +589,16 @@ public class SessionVariable implements Serializable, Writable {
     @VariableMgr.VarAttr(name = INTERNAL_SESSION)
     public boolean internalSession = false;
 
+    // If this fe is in fuzzy mode, then will use initFuzzyModeVariables to generate some variables,
+    // not the default value set in the code.
+    public void initFuzzyModeVariables() {
+        Random random = new Random();
+        this.parallelExecInstanceNum = random.nextInt(8) + 1;
+        this.enableLocalExchange = random.nextBoolean();
+        this.disableJoinReorder = random.nextBoolean();
+        this.disableStreamPreaggregations = random.nextBoolean();
+    }
+
     public String getBlockEncryptionMode() {
         return blockEncryptionMode;
     }