0lai0 commented on issue #3926: URL: https://github.com/apache/datafusion-comet/issues/3926#issuecomment-4229399707
I found that `get_ranges `in HDFS ObjectStore implementation was reading all byte ranges sequentially inside a single blocking task (one open, then a loop of read_range calls). Parquet tends to issue many scattered ranges per file, so that pattern stacks HDFS latency. -- 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]
