gene-bordegaray commented on PR #18343: URL: https://github.com/apache/datafusion/pull/18343#issuecomment-3461048191
This makes sense. Just want to ask clarifying question to make sure I am understanding: - the Round Robin Repartition into the Aggregate is useful because we can disperse work across partitions and then accumulate their results. Using the aggregated results we can use the Hash Repartition to hand off work with the same key (such as env = 'prod') to workers, thus is more efficient - the parquet query is not working this way as the Reparititons are not separated by the Aggregate. The Aggregate does all this work on a single partition then does Repartitioning too late. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
