diff --git a/iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/iot/logdispatcher/LogDispatcher.java b/iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/iot/logdispatcher/LogDispatcher.java
index f5de226cc41d5..9ffb29e77f3ce 100644
--- a/iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/iot/logdispatcher/LogDispatcher.java
+++ b/iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/iot/logdispatcher/LogDispatcher.java
@@ -303,7 +303,7 @@ public void stop() {
       stopped = true;
       try {
         if (!threadSemaphore.tryAcquire(30, TimeUnit.SECONDS)) {
-          logger.error("{}: Dispatcher for {} didn't stop after 30s.", impl.getThisNode(), peer);
+          logger.info("{}: Dispatcher for {} didn't stop after 30s.", impl.getThisNode(), peer);
         }
       } catch (InterruptedException e) {
         Thread.currentThread().interrupt();
diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/snapshot/SnapshotTaker.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/snapshot/SnapshotTaker.java
index 5712e989a77d1..7f046940afe75 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/snapshot/SnapshotTaker.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/snapshot/SnapshotTaker.java
@@ -147,7 +147,10 @@ public static boolean clearSnapshotOfDataRegion(DataRegion dataRegion) {
       pathBuilder.append(File.separator).append(dataRegion.getDatabaseName());
       pathBuilder.append(IoTDBConstant.FILE_NAME_SEPARATOR).append(dataRegion.getDataRegionId());
       try {
-        FileUtils.recursivelyDeleteFolder(pathBuilder.toString());
+        String path = pathBuilder.toString();
+        if (new File(path).exists()) {
+          FileUtils.recursivelyDeleteFolder(path);
+        }
       } catch (IOException e) {
         allSuccess = false;
         LOGGER.warn(
diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/buffer/WALBuffer.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/buffer/WALBuffer.java
index 742824a0fabe6..775a99867e1f1 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/buffer/WALBuffer.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/buffer/WALBuffer.java
@@ -197,8 +197,9 @@ public void setBufferSize(int size) {
   @Override
   public void write(WALEntry walEntry) {
     if (isClosed) {
-      logger.error(
-          "Fail to write WALEntry into wal node-{} because this node is closed.", identifier);
+      logger.warn(
+          "Fail to write WALEntry into wal node-{} because this node is closed. It's ok to see this log during data region deletion.",
+          identifier);
       walEntry.getWalFlushListener().fail(new WALNodeClosedException(identifier));
       return;
     }