JDK-9045797 reproduce

Test.java

import java.io.File;
import java.io.FileWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.FileTime;

public class Test {
  public static void main(String args[]) throws Exception {
    // create a non-empty file.
    File file = new File("test.txt");
    file.createNewFile();
    FileWriter writer = new FileWriter(file);
    writer.write("test\n");
    writer.close();
    Path path = file.toPath();

    BasicFileAttributeView view =
        Files.getFileAttributeView(path, BasicFileAttributeView.class);

    // set atime to 1234500
    view.setTimes(null, FileTime.fromMillis(1234500), null);
    // set mtime to 3456700, atime should be kept
    view.setTimes(FileTime.fromMillis(3456700), null, null);

    FileTime atimeAfter = view.readAttributes().lastAccessTime();
    // atime should be 1234500.
    System.out.println("atime: " + atimeAfter.toMillis());
    if (atimeAfter.toMillis() != 1234500) {
      throw new Exception("atime is updated wrongly.");
    }
  }
}

$ javac Test.java
$ java Test

Exception is thrown on my local MacBook Air.