title: Writing parquet to NFS
body: <p>I am trying to write dataframe in parquet format to NFS (Network File System) by command: </p>
  
  <pre><code>df.write.mode('overwrite').parquet(OUTPUT_DIR)
  </code></pre>
  
  <p>It works fine with HDFS but with NFS, only _temporary is created and no actual parquet files are written. Job is successfule without any errors.
  Jobs writitn same df to HDFS and NFS, have same logs for OutputCommitter:</p>
  
  <pre><code>FileOutputCommitter: Saved output of task 'attempt_XXXX_0002_m_000000_0' to path_to_DF/_temporary/0/task_XXXX_0002_m_000000
  SparkHadoopMapRedUtil: attempt_XXXX_0002_m_000000_0: Committed
  Executor: Finished task 0.0 in stage 2.0 (TID X). 2707 bytes result sent to driver
  </code></pre>
  
  <p>Thanks.</p>