title: Split a parquet file in smaller chunks using dask
body: <p>I am trying to split a parquet file using DASK with the following piece of code</p>
  
  <pre><code>import dask.dataframe as pd
  df = pd.read_parquet(dataset_path, chunksize="100MB")
  df.repartition(partition_size="100MB")
  pd.to_parquet(df,output_path)
  </code></pre>
  
  <p>I have only one physical file in input, i.e. file.parquet</p>
  
  <p>The output of this script is as well only one file, i.e. part.0.parquet. </p>
  
  <p>Based on the partition_size &amp; chunksize parameters, I should have multiple files in output</p>
  
  <p>Any help would be appreciated</p>