You are viewing a plain text version of this content. The canonical link for it is here.

Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/14 22:20:04 UTC

[GitHub] [arrow-datafusion] sunchao commented on issue #2205: RFC: Spill-To-Disk Object Storage Download

sunchao commented on issue #2205:
URL: https://github.com/apache/arrow-datafusion/issues/2205#issuecomment-1099675328

   FWIW within each Spark task, it currently process each row group in a sequential manner, and for each of these it'll read all the projected column chunks (with filtered pages after column index), buffer them in memory and then start decompressing + decoding. For interacting with S3/HDFS/etc, it relies on the Hadoop's [FileSystem](https://hadoop.apache.org/docs/r3.1.0/api/org/apache/hadoop/fs/FileSystem.html) API. @steveloughran is the expert here on the S3 client implementation.


-- 
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-unsubscribe@arrow.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org