mapleFU commented on issue #42097: URL: https://github.com/apache/arrow/issues/42097#issuecomment-2160796861
I've check the code here: https://github.com/apache/arrow/blob/03a960de86d0c3ce8bf299724c94be5b291d85b4/cpp/src/parquet/arrow/reader.cc#L1247-L1284 CPU Executor is used when `use_thread` enabled ( C++ disable use_thread by default ), and per-thread calls a `ReadColumn` to emit the column out, generally it couldn't get slower here. I guess maybe that's because contention on CPU thread or other reason 🤔, maybe I can draft some implemention later this week -- 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]
