title: How to create unique index in Dask DataFrame?
body: <p>Imagine I have a <code>Dask</code> DataFrame from <code>read_csv</code> or created another way.</p>
  <p>How can I make a unique index for the dask dataframe?</p>
  <p>Note:</p>
  <p><code>reset_index</code> builds a monotonically ascending index in each partition. That means (0,1,2,3,4,5,... ) for Partition 1,
  (0,1,2,3,4,5,... ) for Partition 2, (0,1,2,3,4,5,... ) for Partition 3 and so on.</p>
  <p>I would like a unique index for every row in the dataframe (across all partitions).</p>