diff --git a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
index c038a9f1780ceb..4a2804608e15bd 100644
--- a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
+++ b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
@@ -1679,12 +1679,6 @@ public class Config extends ConfigBase {
     @ConfField(mutable = true)
     public static boolean enable_decimal_conversion = true;
 
-    /**
-     * List of S3 API compatible object storage systems.
-     */
-    @ConfField
-    public static String s3_compatible_object_storages = "s3,oss,cos,bos";
-
     /**
      * Support complex data type ARRAY.
      */
diff --git a/fe/fe-core/src/main/java/org/apache/doris/catalog/external/HMSExternalTable.java b/fe/fe-core/src/main/java/org/apache/doris/catalog/external/HMSExternalTable.java
index 8d86ea72afcfa6..0528194b64fff0 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/catalog/external/HMSExternalTable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/catalog/external/HMSExternalTable.java
@@ -203,12 +203,22 @@ public boolean isHoodieCowTable() {
      * Support managed_table and external_table.
      */
     private boolean supportedHiveTable() {
+        // we will return false if null, which means that the table type maybe unsupported.
+        if (remoteTable.getSd() == null) {
+            return false;
+        }
         String inputFileFormat = remoteTable.getSd().getInputFormat();
         if (inputFileFormat == null) {
             return false;
         }
+        boolean supportedFileFormat = SUPPORTED_HIVE_FILE_FORMATS.contains(inputFileFormat);
+        if (!supportedFileFormat) {
+            // for easier debugging, need return error message if unsupported input format is used.
+            // NotSupportedException is required by some operation.
+            throw new NotSupportedException("Unsupported hive input format: " + inputFileFormat);
+        }
         LOG.debug("hms table {} is {} with file format: {}", name, remoteTable.getTableType(), inputFileFormat);
-        return SUPPORTED_HIVE_FILE_FORMATS.contains(inputFileFormat);
+        return true;
     }
 
     /**
diff --git a/fe/fe-core/src/main/java/org/apache/doris/common/util/Util.java b/fe/fe-core/src/main/java/org/apache/doris/common/util/Util.java
index 58de5133c6b5f3..87b67dfa28d5ec 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/common/util/Util.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/common/util/Util.java
@@ -20,7 +20,6 @@
 import org.apache.doris.catalog.Column;
 import org.apache.doris.catalog.PrimitiveType;
 import org.apache.doris.common.AnalysisException;
-import org.apache.doris.common.Config;
 import org.apache.doris.common.FeNameFormat;
 import org.apache.doris.datasource.InternalCatalog;
 import org.apache.doris.qe.ConnectContext;
@@ -513,15 +512,6 @@ public static void prohibitExternalCatalog(String catalog, String msg) throws An
         }
     }
 
-    public static boolean isS3CompatibleStorageSchema(String schema) {
-        for (String objectStorage : Config.s3_compatible_object_storages.split(",")) {
-            if (objectStorage.equalsIgnoreCase(schema)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
 
     public static String bytesToHex(byte[] bytes) {