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| <html> |
| <h2>CoGroupByKey</h2> |
| <p>CoGroupByKey performs a relational join of two or more key/value PCollections that have the same key type.</p> |
| <p>In this task, we are going to implement a |
| <a href="https://beam.apache.org/releases/pydoc/2.11.0/apache_beam.transforms.util.html#apache_beam.transforms.util.CoGroupByKey"> |
| CoGroupByKey</a> transform that join words by its first alphabetical letter, and then produces the string |
| representation of the WordsAlphabet model. |
| </p> |
| <br> |
| <br> |
| <div class='hint'>Refer to |
| <a href="https://beam.apache.org/releases/pydoc/2.11.0/apache_beam.transforms.util.html#apache_beam.transforms.util.CoGroupByKey">CoGroupByKey</a> |
| to solve this problem</div> |
| </html> |
| |
