handle watermark in stream delta join

[st1page]

lookupUnion

risingwave/src/stream/src/executor/lookup_union.rs

Line 115 in ec5f8d0

Message::Watermark(_) => {

lookup

risingwave/src/stream/src/executor/lookup/sides.rs

Line 240 in 7eb5934

Either::Left(Message::Watermark(_)) => {

[st1page]

c.c. @chenzl25

[github-actions]

This issue has been open for 60 days with no activity.

If you think it is still relevant today, and needs to be done in the near future, you can comment to update the status, or just manually remove the no-issue-activity label.

You can also confidently close this issue as not planned to keep our backlog clean.
Don't worry if you think the issue is still valuable to continue in the future.
It's searchable and can be reopened when it's time. 😄