ZhengYi Weng created FLINK-31750:
------------------------------------
Summary: Hash Keys are duplicate when join reorder happens in
stream mode
Key: FLINK-31750
URL: https://issues.apache.org/jira/browse/FLINK-31750
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Reporter: ZhengYi Weng
Attachments: image-2023-04-07-10-39-13-831.png
When I run `JoinReorderTestBase#testAllInnerJoin` , I find hash keys are
duplicate. !image-2023-04-07-10-39-13-831.png|width=571,height=263!
The reason why it happens is that when join reorder, the join condition will
change and generate the same column condition, for example，the condition of T1
join（T4 join T5）is a1 = a4 and a1 = a5. It can de fixed if columns in
`StreamPhysicalJoinRuleBase#onMatch#toHashTraitByColumns` are not duplicate.
I will fix it.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
