alamb commented on issue #5276: URL: https://github.com/apache/arrow-datafusion/issues/5276#issuecomment-1434753677
> Not sure about DuckDB -- it seems to be able to parallelise reads of single file (at least latest version), but it definitely caused lack of parallelism for Datafusion @korowa s added the feature to parallelize reads of a single parquet file in DataFusion. https://github.com/apache/arrow-datafusion/pull/5295 proposes enabling this by default > Distinct count might be mostly slow as the current implementation is very allocation-heavy. 👍 -- 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]
