Dandandan opened a new issue #299: URL: https://github.com/apache/arrow-datafusion/issues/299
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** Window functions have a `PARTITION BY` clause to split the data in partitions and calculate window functions over those partitions individually. **Describe the solution you'd like** We can use `Repartition::Hash` to parallelize the execution. **Describe alternatives you've considered** n/a **Additional context** http://www.vldb.org/pvldb/vol8/p1058-leis.pdf&ved=2ahUKEwj80-3OjrfwAhUJPOwKHfdRAssQFjAMegQIEhAC&usg=AOvVaw2KKUPeYhyc-pEFTmlqyboj -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
