title: read a parquet files from HDFS using PyArrow
body: <p>I know I can connect to an HDFS cluster via pyarrow using <code>pyarrow.hdfs.connect()</code></p>
  
  <p>I also know I can read a parquet file using <code>pyarrow.parquet</code>'s <code>read_table()</code></p>
  
  <p>However, <code>read_table()</code> accepts a filepath, whereas <code>hdfs.connect()</code> gives me a <code>HadoopFileSystem</code> instance. </p>
  
  <p>Is it somehow possible to use just pyarrow (with libhdfs3 installed) to get a hold of a parquet file/folder residing in an HDFS cluster? What I wish to get to is the <code>to_pydict()</code> function, then I can pass the data along.</p>