tgravescs commented on issue #25299: [SPARK-27651][Core] Avoid the network when shuffle blocks are fetched from the same host URL: https://github.com/apache/spark/pull/25299#issuecomment-558228346 ok that makes sense. thanks. So it seems we fetch all the local blocks in first and then the host local blocks and all that happens in the current thread while the remote block fetcher happens in separate. My concern could go both ways then. Now we are having to wait to fetch the local blocks first before the host local blocks where as before that could have been in parallel with the local blocks. Or if we end up with a lot of host local blocks then within those fetches they happen serially now whereas they would have happened in parallel before. Mostly just an observation to something we may want to enhance later if we see it as an issue.
---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
