yujun777 opened a new pull request, #52159:
URL: https://github.com/apache/doris/pull/52159
### What problem does this PR solve?
Guava Sets.intersection will return a SetView, then for chain call
Sets.intersection like below code:
```
List<Set<>> B;
Set<> A = B.get(0);
for (int i = 1; i < B.size(); i++) {
A = Sets.intersection(A, B.get(i));
}
```
Then A is a recursive SetViews, A = SetView(SetView(SetView(B0 interset
B1) interset B2) ... interset Bn).
Then when access A, it will call recursive deeply SetView's functions.
For example, when call A.isEmpty(), its call stack will be like
```
java.lang.StackOverflowError: null
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:140)
~[guava-33.2.1-jre.jar:?]
at com.google.common.collect.Sets$2$1.computeNext(Sets.java:838)
~[guava-33.2.1-jre.jar:?]
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:145)
~[guava-33.2.1-jre.jar:?]
...
```
if the stack is deep, it then throw StackOverflowError.
So for the chain set intersection, need to eliminate the SetView chain,
and convert the SetView to a Set.
### 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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