[Bugfix] Fix ClassCastException of ExceptionUtil

Author: hailin0

seatunnel-engine/seatunnel-engine-common/src/main/java/org/apache/seatunnel/engine/common/utils/ExceptionUtil.java

@@ -116,7 +116,12 @@ public static Throwable peel(Throwable t) {
 
     /** javac hack for unchecking the checked exception. */
     @SuppressWarnings("unchecked")
-    public static <T extends Exception> void sneakyThrow(Throwable t) throws T {
+    public static <T extends Throwable> void sneakyThrow(Throwable t) throws T {
+        throw (T) t;
+    }
+
+    @SuppressWarnings("unchecked")
+    public static <T extends Exception> void sneakyThrow(Exception t) throws T {
         throw (T) t;
     }
 

seatunnel-engine/seatunnel-engine-common/src/test/java/org/apache/seatunnel/engine/common/utils/ExceptionUtilTest.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.seatunnel.engine.common.utils;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class ExceptionUtilTest {
+
+    @Test
+    void throwsCheckedException() {
+        Exception exception = new Exception("Checked Exception");
+        assertThrows(Exception.class, () -> ExceptionUtil.sneakyThrow(exception));
+    }
+
+    @Test
+    void throwsUncheckedException() {
+        RuntimeException exception = new RuntimeException("Unchecked Exception");
+        assertThrows(RuntimeException.class, () -> ExceptionUtil.sneakyThrow(exception));
+    }
+
+    @Test
+    void throwsError() {
+        Error error = new Error("Error");
+        assertThrows(Error.class, () -> ExceptionUtil.sneakyThrow(error));
+    }
+
+    @Test
+    void throwsNullPointerExceptionWhenNull() {
+        assertThrows(NullPointerException.class, () -> ExceptionUtil.sneakyThrow(null));
+    }
+}