title: How to compress multiple HDFS files into one
body: <p>I am working on a Zeppelin Cluster (w Spark), using <code>write.parquet()</code>, I end up with multiple Parquet files.
  I was wondering, is it possible to merge them into one file? Or I have to use a <code>path=&quot;/folder/*&quot;</code> every time?</p>