yujun777 opened a new pull request, #47829:
URL: https://github.com/apache/doris/pull/47829
### What problem does this PR solve?
#45181 introduce a dead loop for nereids optimizer, then cause error
'Nereids cost too much time'.
simplify range process in-predicate steps as follow:
1. Extract in-predicate's options into a set S1;
2. Use a discrete value desc to hold the value, use a new set S2, and
S2.addAll(S1);
3. Turn discrete value desc back to a new in-predicate, the new
in-predicate's options add all S2.
Before #45181, S2 is an order set(TreeSet)， so the result in-predicate's
options are always order. But this PR change S2 as a unorder set(HashSet).
Then will cause dead loop: in-predicate => S1 => new S2 => new in-predicate
=> new S1 => new S2 => ...
fix:
1. S1 use linked hash set;
2. don't use a new S2, just let S2 = S1;
then the result in-predicate's options' order will be kept.
### 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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