englefly opened a new pull request, #46585:
URL: https://github.com/apache/doris/pull/46585
pick#46551
### What problem does this PR solve?
Plan node is not good to be hash map key, because two plan nodes in
different tree level may be regarded as "equal". for example, in following
tree, topn1.equals(topn2) may be true.
Topn filter generator should distinguish them, and hence topn
node is not suitable to be used as hash map key.
topn1
-->some node
-->topn2
-->other node
Related PR: #31485
(cherry picked from commit 811f93682d58eae76f87c411fcb2a572f03b2c92)
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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