dbutils.fs.ls不像cp、mv或rm那样具有递归功能。因此，您需要自己迭代。下面是一个代码片段，它将为您完成此任务。从数据块笔记本运行代码。

from dbutils import FileInfo
from typing import List

root_path = "/mnt/datalake/.../XYZ"

def discover_size(path: str, verbose: bool = True):
  def loop_path(paths: List[FileInfo], accum_size: float):
    if not paths:
      return accum_size
    else:
      head, tail = paths[0], paths[1:]
      if head.size > 0:
        if verbose:
          print(f"{head.path}: {head.size / 1e6} MB")
        accum_size += head.size / 1e6
        return loop_path(tail, accum_size)
      else:
        extended_tail = dbutils.fs.ls(head.path) + tail
        return loop_path(extended_tail, accum_size)

  return loop_path(dbutils.fs.ls(path), 0.0)

discover_size(root_path, verbose=True)  # Total size in megabytes at the end

如果该位置是在dbfs中挂载的。那么您可以使用du -h方法（尚未测试）。如果您在笔记本中，请使用以下内容创建一个新单元：

%sh
du -h /mnt/datalake/.../XYZ

@Emer的答案很好，但是可以很快找到RecursionError: maximum recursion depth exceeded，因为它对每个文件都进行递归（如果有X个文件，则会有X个叠瓦递归）。
以下是仅针对文件夹的递归：

%python
from dbutils import FileInfo
from typing import List

def discover_size2(path: str, verbose: bool = True):
  def loop_path(path: str):
    accum_size = 0.0
    path_list = dbutils.fs.ls(path)
    if path_list:
      for path_object in path_list:
        if path_object.size > 0:
          if verbose:
            print(f"{path_object.path}: {path_object.size / 1e6} MB")
          accum_size += path_object.size / 1e6
        else:
          # Folder: recursive discovery
          accum_size += loop_path(path_object.path)
    return accum_size

  return loop_path(path)

尝试使用dbutils ls命令，获取 Dataframe 中的文件列表，然后对size列使用聚合函数SUM（）进行查询：

val fsds = dbutils.fs.ls("/mnt/datalake/.../XYZ/.../abc.parquet").toDF

fsds.createOrReplaceTempView("filesList")

display(spark.sql("select COUNT(name) as NoOfRows, SUM(size) as sizeInBytes from fileListPROD"))

爱死answer by Emer了！
少量添加：
如果你遇见
“模块未找到错误：没有名为'dbutils'的模块“
试试这个from dbruntime.dbutils而不是from dbutils，它对我很有效！

对于那些仍在用@robin loce的方法达到递归极限的人，这里有一个纯粹的迭代答案：

# from dbutils import FileInfo # Not required in databricks
# from dbruntime.dbutils import FileInfo # may work for some people

def get_size_of_path(path):
    return sum([file.size for file in get_all_files_in_path(path)])

def get_all_files_in_path(path, verbose=False):
    nodes_new = []

    nodes_new = dbutils.fs.ls(path)
    files = []

    while len(nodes_new) > 0:
        current_nodes = nodes_new
        nodes_new = []
        for node in current_nodes:
            if verbose:
                print(f"Processing {node.path}")
            children = dbutils.fs.ls(node.path)
            for child in children:
                if child.size == 0 and child.path != node.path:
                    nodes_new.append(child)
                elif child.path != node.path:
                    files.append(child)
    return files

path = "s3://some/path/"

print(f"Size of {path} in gb: {get_size_of_path(path) / 1024 / 1024 / 1024}")