我正试图通过pyarrow连接到hdfs，但它不起作用，因为 libhdfs 无法加载库。 libhdfs.so 在 $HADOOP_HOME/lib/native 以及在 $ARROW_LIBHDFS_DIR .

print(os.environ['ARROW_LIBHDFS_DIR'])
fs = hdfs.connect()

bash-3.2$ ls $ARROW_LIBHDFS_DIR
examples        libhadoop.so.1.0.0  libhdfs.a       libnativetask.a
libhadoop.a     libhadooppipes.a    libhdfs.so      libnativetask.so
libhadoop.so        libhadooputils.a    libhdfs.so.0.0.0    libnativetask.so.1.0.0

我得到的错误是：

Traceback (most recent call last):
  File "wine-pred-ml.py", line 31, in <module>
    fs = hdfs.connect()
  File "/Users/PVZP/Library/Python/2.7/lib/python/site-packages/pyarrow/hdfs.py", line 183, in connect
    extra_conf=extra_conf)
  File "/Users/PVZP/Library/Python/2.7/lib/python/site-packages/pyarrow/hdfs.py", line 37, in __init__
    self._connect(host, port, user, kerb_ticket, driver, extra_conf)
  File "pyarrow/io-hdfs.pxi", line 89, in pyarrow.lib.HadoopFileSystem._connect
  File "pyarrow/error.pxi", line 83, in pyarrow.lib.check_status
pyarrow.lib.ArrowIOError: Unable to load libhdfs