zhuqi-lucas commented on code in PR #16641:
URL: https://github.com/apache/datafusion/pull/16641#discussion_r2179307292
##########
datafusion/physical-optimizer/src/enforce_sorting/sort_pushdown.rs:
##########
@@ -668,6 +668,15 @@ fn handle_hash_join(
plan: &HashJoinExec,
parent_required: OrderingRequirements,
) -> Result<Option<Vec<Option<OrderingRequirements>>>> {
+ // Anti-joins (LeftAnti or RightAnti) do not preserve meaningful input
order,
+ // so sorting beforehand cannot be relied on. Bail out early for both
flavors:
+ match plan.join_type() {
+ JoinType::LeftAnti | JoinType::RightAnti => {
+ return Ok(None);
+ }
+ _ => {}
+ }
Review Comment:
So it seems we need to pushdown sort exec without fetch, so it can avoid the
topk cases?
--
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]
