title: Merge two parquet files in HDFS
body: <p>I have some files in <code>HDFS</code> in <code>parquet</code> format. I would like to merge these files into one single large file.</p>
  
  <p>How can I do that?</p>
  
  <p>I have done some thing like below but for text files.</p>
  
  <pre><code>hadoop fs -cat /input_hdfs_dir/* | hadoop fs -put - /output_hdfs_file
  </code></pre>
  
  <p>But unable to achieve the desired result in <code>parquet</code> format.</p>
  
  <p>How can I achieve my requirement?</p>