zebsme commented on issue #15321:
URL: https://github.com/apache/datafusion/issues/15321#issuecomment-2785774470
Thanks for your reply @2010YOUY01 , and the benchmark shows that
StreamReader with mmap has no performance improvement compared to current
implementation:
```
spill_io/StreamReader/read_100/
time: [7.1020 ms 7.2847 ms 7.4983 ms]
change: [-2.7305% +1.2574% +5.1899%] (p = 0.55 >
0.05)
No change in performance detected.
```
So there is no need to enable mmap now, as we need stream format here.
--
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: github-unsubscr...@datafusion.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org
For additional commands, e-mail: github-h...@datafusion.apache.org
