@Test
 public void lastModificationTimeCompleteFileTest() throws Exception {
   long fileId = mFsMaster.createFile(new AlluxioURI("/testFile"), CreateFileOptions.defaults());
   long opTimeMs = TEST_CURRENT_TIME;
   try (LockedInodePath inodePath =
       mInodeTree.lockFullInodePath(new AlluxioURI("/testFile"), InodeTree.LockMode.WRITE)) {
     mFsMaster.completeFileInternal(new ArrayList<Long>(), inodePath, 0, opTimeMs);
   }
   FileInfo fileInfo = mFsMaster.getFileInfo(fileId);
   Assert.assertEquals(opTimeMs, fileInfo.getLastModificationTimeMs());
 }
 @Test
 public void lastModificationTimeCreateFileTest() throws Exception {
   mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
   long opTimeMs = TEST_CURRENT_TIME;
   CreateFileOptions options = CreateFileOptions.defaults().setOperationTimeMs(opTimeMs);
   try (LockedInodePath inodePath =
       mInodeTree.lockInodePath(
           new AlluxioURI("/testFolder/testFile"), InodeTree.LockMode.WRITE)) {
     mFsMaster.createFileInternal(inodePath, options);
   }
   FileInfo folderInfo = mFsMaster.getFileInfo(mFsMaster.getFileId(new AlluxioURI("/testFolder")));
   Assert.assertEquals(opTimeMs, folderInfo.getLastModificationTimeMs());
 }
  @Test
  public void lastModificationTimeRenameTest() throws Exception {
    mFsMaster.createDirectory(new AlluxioURI("/testFolder"), CreateDirectoryOptions.defaults());
    long fileId =
        mFsMaster.createFile(new AlluxioURI("/testFolder/testFile1"), CreateFileOptions.defaults());
    long opTimeMs = TEST_CURRENT_TIME;

    try (InodePathPair inodePathPair =
        mInodeTree.lockInodePathPair(
            new AlluxioURI("/testFolder/testFile1"),
            InodeTree.LockMode.WRITE_PARENT,
            new AlluxioURI("/testFolder/testFile2"),
            InodeTree.LockMode.WRITE)) {
      LockedInodePath srcPath = inodePathPair.getFirst();
      LockedInodePath dstPath = inodePathPair.getSecond();
      mFsMaster.renameInternal(srcPath, dstPath, true, opTimeMs);
    }
    FileInfo folderInfo = mFsMaster.getFileInfo(mFsMaster.getFileId(new AlluxioURI("/testFolder")));
    Assert.assertEquals(opTimeMs, folderInfo.getLastModificationTimeMs());
  }