[HUDI-6902] Fix a test about timestamp format (#10606)

hudi-hadoop-mr/src/test/java/org/apache/hudi/hadoop/TestHoodieParquetInputFormat.java

@@ -67,12 +67,14 @@
 import java.io.IOException;
 import java.nio.file.Paths;
 import java.sql.Timestamp;
+import java.text.SimpleDateFormat;
 import java.time.Instant;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Date;
 import java.util.List;
 
 import static org.apache.hudi.common.table.timeline.TimelineMetadataUtils.serializeCommitMetadata;
@@ -815,7 +817,11 @@ public void testHoodieParquetInputFormatReadTimeType() throws IOException {
               Instant.ofEpochMilli(testTimestampLong), ZoneOffset.UTC);
           assertEquals(Timestamp.valueOf(localDateTime).toString(), String.valueOf(writable.get()[0]));
         } else {
-          assertEquals(new Timestamp(testTimestampLong).toString(), String.valueOf(writable.get()[0]));
+          Date date = new Date();
+          date.setTime(testTimestampLong);
+          assertEquals(
+              new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS").format(date),
+              String.valueOf(writable.get()[0]));
         }
         // test long
         assertEquals(testTimestampLong * 1000, ((LongWritable) writable.get()[1]).get());