diff --git a/flink-formats/flink-protobuf/pom.xml b/flink-formats/flink-protobuf/pom.xml
index f25d37bd964bc7..d83a0e19d8a0b0 100644
--- a/flink-formats/flink-protobuf/pom.xml
+++ b/flink-formats/flink-protobuf/pom.xml
@@ -61,6 +61,7 @@ under the License.
 			<groupId>com.google.protobuf</groupId>
 			<artifactId>protobuf-java</artifactId>
 			<version>${protobuf.version}</version>
+			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.codehaus.janino</groupId>
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/OuterMultiProtoToRowTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/OuterMultiProtoToRowTest.java
index a15fc4e49682c0..695ffb652b59a4 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/OuterMultiProtoToRowTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/OuterMultiProtoToRowTest.java
@@ -51,7 +51,7 @@ public void testSimple() throws Exception {
                         .setD(0.1f)
                         .setE(0.01)
                         .setF("haha")
-                        .setG(ByteString.copyFrom(new byte[]{1}))
+                        .setG(ByteString.copyFrom(new byte[] {1}))
                         .build();
 
         RowData row = deserializationSchema.deserialize(simple.toByteArray());
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/Pb3ToRowTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/Pb3ToRowTest.java
index 7e7b59572aceb1..12e38ce37a24fb 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/Pb3ToRowTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/Pb3ToRowTest.java
@@ -56,7 +56,7 @@ public void testMessage() throws Exception {
                         .setF(Corpus.IMAGES)
                         .setG(innerMessageTest)
                         .addH(innerMessageTest)
-                        .setI(ByteString.copyFrom(new byte[]{100}))
+                        .setI(ByteString.copyFrom(new byte[] {100}))
                         .putMap1("a", "b")
                         .putMap1("c", "d")
                         .putMap2("f", innerMessageTest)
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToMultipleLevelMessageProtoBytesTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToMultipleLevelMessageProtoBytesTest.java
index 1c30bbe958f56e..920e47c3f996db 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToMultipleLevelMessageProtoBytesTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToMultipleLevelMessageProtoBytesTest.java
@@ -26,6 +26,7 @@
 
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 
 public class RowToMultipleLevelMessageProtoBytesTest {
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedMessageProtoBytesTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedMessageProtoBytesTest.java
index e5b9c44bf499f8..41602c4073a32b 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedMessageProtoBytesTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedMessageProtoBytesTest.java
@@ -28,12 +28,14 @@
 
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
+
 public class RowToRepeatedMessageProtoBytesTest {
     @Test
     public void testRepeatedMessage() throws Exception {
         RowData subRow = GenericRowData.of(1, 2L);
         RowData subRow2 = GenericRowData.of(3, 4L);
-        ArrayData tmp = new GenericArrayData(new Object[]{subRow, subRow2});
+        ArrayData tmp = new GenericArrayData(new Object[] {subRow, subRow2});
         RowData row = GenericRowData.of(tmp);
 
         RowType rowType = PbRowTypeInformation.generateRowType(RepeatedMessageTest.getDescriptor());
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedProtoBytesTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedProtoBytesTest.java
index aaf93c1ed4769e..17ddd89c69a444 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedProtoBytesTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToRepeatedProtoBytesTest.java
@@ -28,13 +28,15 @@
 
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
+
 public class RowToRepeatedProtoBytesTest {
     @Test
     public void testSimple() throws Exception {
         RowData row =
                 GenericRowData.of(
                         1,
-                        new GenericArrayData(new Object[]{1L, 2L, 3L}),
+                        new GenericArrayData(new Object[] {1L, 2L, 3L}),
                         false,
                         0.1f,
                         0.01,
@@ -59,7 +61,7 @@ public void testEmptyArray() throws Exception {
         RowData row =
                 GenericRowData.of(
                         1,
-                        new GenericArrayData(new Object[]{}),
+                        new GenericArrayData(new Object[] {}),
                         false,
                         0.1f,
                         0.01,
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToSimpleProtoBytesTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToSimpleProtoBytesTest.java
index 65ce3342860eca..1292e7e9bda67c 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToSimpleProtoBytesTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/RowToSimpleProtoBytesTest.java
@@ -42,7 +42,7 @@ public void testSimple() throws Exception {
                         0.1f,
                         0.01,
                         StringData.fromString("hello"),
-                        new byte[]{1},
+                        new byte[] {1},
                         StringData.fromString("IMAGES"),
                         1);
 
diff --git a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/SimpleProtoToRowTest.java b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/SimpleProtoToRowTest.java
index a103a354be20a2..1313ae26af8459 100644
--- a/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/SimpleProtoToRowTest.java
+++ b/flink-formats/flink-protobuf/src/test/java/org/apache/flink/formats/protobuf/SimpleProtoToRowTest.java
@@ -51,7 +51,7 @@ public void testSimple() throws Exception {
                         .setD(0.1f)
                         .setE(0.01)
                         .setF("haha")
-                        .setG(ByteString.copyFrom(new byte[]{1}))
+                        .setG(ByteString.copyFrom(new byte[] {1}))
                         .setH(SimpleTest.Corpus.IMAGES)
                         .setFAbc7D(1) // test fieldNameToJsonName
                         .build();