marsupialtail opened a new pull request, #13662: URL: https://github.com/apache/arrow/pull/13662
After: https://github.com/apache/arrow/pull/13640, seems like O_DIRECT is not a good idea, so let's use posix_fadvise to control the page cache to address the issue mentioned in: https://issues.apache.org/jira/browse/ARROW-14635. To test it, use the simple python script below: ``` SIZE = 1024 * 1024 N = 1024 * 10 import pyarrow.fs as fs #da = fs.LocalFileSystem(reuse=False) #this will turn on fadvise and disable page cache for the writes da = fs.LocalFileSystem(reuse=True) s = da.open_output_stream("bump") a = bytes("1","utf-8") * SIZE for i in range(N): s.write(a) s.close() ``` -- 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]
