wuwenchi opened a new pull request, #50376:
URL: https://github.com/apache/doris/pull/50376
### What problem does this PR solve?
Related PR: #48838
Problem Summary:
When a snapshot is specified in the query, the corresponding schema should
be used for parsing, otherwise the latest snapshot should be used for parsing.
1. When using the HMS type, you also need to initialize the executor pool.
2. Set the size of the thread pool to be equal to the number of cores of the
current machine.
3. When no snapshot is specified, the latest schema is used.
4. When specifying a snapshot, you need to use the schema corresponding to
the snapshot.
5. When generating a scannode, save the schema information and no longer
obtain it from the cache to prevent the cache from being refreshed.
6. When refreshing the schema, you need to refresh all schemas of related
tables.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] 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:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] 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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