korowa commented on issue #5276: URL: https://github.com/apache/arrow-datafusion/issues/5276#issuecomment-1434253563
> One thing I noticed is that duckdb loads partitioned parquet files: https://github.com/ClickHouse/ClickBench/blob/main/duckdb-parquet/benchmark.sh as opposed to datafusion: https://github.com/ClickHouse/ClickBench/blob/main/datafusion/benchmark.sh. I guess this can impact parallelism? 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 -- 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]
