diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/joinorder/hypergraph/SubgraphEnumerator.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/joinorder/hypergraph/SubgraphEnumerator.java
index f3b9c8c74c..cc5a9cea96 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/joinorder/hypergraph/SubgraphEnumerator.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/jobs/joinorder/hypergraph/SubgraphEnumerator.java
@@ -17,7 +17,6 @@
 
 package org.apache.doris.nereids.jobs.joinorder.hypergraph;
 
-import org.apache.doris.nereids.NereidsPlanner;
 import org.apache.doris.nereids.jobs.joinorder.hypergraph.bitmap.LongBitmap;
 import org.apache.doris.nereids.jobs.joinorder.hypergraph.bitmap.LongBitmapSubsetIterator;
 import org.apache.doris.nereids.jobs.joinorder.hypergraph.receiver.AbstractReceiver;
@@ -40,7 +39,7 @@ import java.util.stream.Collectors;
  * More details are in Paper: Dynamic Programming Strikes Back and Build Query Optimizer.
  */
 public class SubgraphEnumerator {
-    public static final Logger LOG = LogManager.getLogger(NereidsPlanner.class);
+    public static final Logger LOG = LogManager.getLogger(SubgraphEnumerator.class);
 
     // The receiver receives the csg and cmp and record them, named DPTable in paper
     AbstractReceiver receiver;
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/memo/Memo.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/memo/Memo.java
index bb7b540f78..2b8bef8f4e 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/memo/Memo.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/memo/Memo.java
@@ -46,6 +46,8 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -60,6 +62,7 @@ import javax.annotation.Nullable;
  * Representation for memo in cascades optimizer.
  */
 public class Memo {
+    public static final Logger LOG = LogManager.getLogger(Memo.class);
     // generate group id in memo is better for test, since we can reproduce exactly same Memo.
     private static final EventProducer GROUP_MERGE_TRACER = new EventProducer(GroupMergeEvent.class,
             EventChannel.getDefaultChannel().addConsumers(new LogConsumer(GroupMergeEvent.class, EventChannel.LOG)));
@@ -356,6 +359,9 @@ public class Memo {
         Preconditions.checkArgument(!(plan instanceof GroupPlan), "plan can not be GroupPlan");
         // check logicalproperties, must same output in a Group.
         if (targetGroup != null && !plan.getLogicalProperties().equals(targetGroup.getLogicalProperties())) {
+            LOG.info("Insert a plan into targetGroup but differ in logicalproperties."
+                            + "\nPlan logicalproperties: {}\n targetGroup logicalproperties: {}",
+                    plan.getLogicalProperties(), targetGroup.getLogicalProperties());
             throw new IllegalStateException("Insert a plan into targetGroup but differ in logicalproperties");
         }
         Optional<GroupExpression> groupExpr = plan.getGroupExpression();
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java
index f0baee3684..59cc6fe40f 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalProject.java
@@ -76,7 +76,7 @@ public class LogicalProject<CHILD_TYPE extends Plan> extends LogicalUnary<CHILD_
         this(projects, excepts, true, child, isDistinct);
     }
 
-    public LogicalProject(List<NamedExpression> projects, List<NamedExpression> excepts,
+    private LogicalProject(List<NamedExpression> projects, List<NamedExpression> excepts,
                           boolean canEliminate, CHILD_TYPE child, boolean isDistinct) {
         this(projects, excepts, canEliminate, Optional.empty(), Optional.empty(), child, isDistinct);
     }