comphead commented on issue #12454: URL: https://github.com/apache/datafusion/issues/12454#issuecomment-2350438695
If there 1 huge table and another one is small, in this case the `broadcastJoin/mapJoin` works best. in distributed env(which is not DF) the big table repartitioned across nodes(every node can be DF), then small table copied to every node and usual hash join happens. The final result needs to be merged from nodes to the stream. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
