使用以下代码创建符号链接而不是使用ln命令：

from pyspark.ml.util import *
JavaWrapper = SparkContext._jvm.JavaWrapper
JavaClass = SparkContext._jvm.JavaClass
def createSymlink(target, link):
    hadoop = SparkContext._jvm.org.apache.hadoop
    fs = hadoop.fs.FileSystem
    conf = hadoop.conf.Configuration()
    uri = hadoop.fs.Path(target).toUri()
    tgtFs = fs.get(uri, conf)
    linkPath = JavaWrapper("org.apache.hadoop.fs.Path")(link)
    tgtPath = JavaWrapper("org.apache.hadoop.fs.Path")(target)
    tgtFs.createSymlink(tgtPath, linkPath, True)

然后使用以下代码调用方便的'createSymlink”函数来创建符号链接：

createSymlink("/mnt/source", "/dbfs/mnt/symlink")