zy-kkk opened a new pull request, #58166:
URL: https://github.com/apache/doris/pull/58166
### What problem does this PR solve?
For Hive tables with massive partitions (10K+), INSERT operations are
extremely slow because:
- FE fetches all partition metadata from HMS directly (expensive RPC calls)
- Full table cache invalidation after each insert (unnecessary)
Problem Summary:
1. **Use cache for partition metadata in INSERT**
- FE now fetches partition info from cache instead of directly querying
HMS when preparing INSERT
- Avoid expensive HMS RPC calls for every INSERT operation
2. **Selective cache refresh after commit**
- Only invalidate affected partitions instead of full table cache
- Based on partition update info from BE (NEW/APPEND/OVERWRITE)
- Significantly reduces cache invalidation overhead
3. **Handle cache inconsistency gracefully**
- When BE marks partition as NEW but it already exists in HMS (cache miss)
- FE detects this by checking HMS and treats it as APPEND instead of
failing
- Prevents `AlreadyExistsException` errors
For tables with partitions:
- **Before**: HMS calls per INSERT + full cache invalidation
- **After**: cache lookup + selective partition refresh
- Expected speedup: 10x-100x for partition metadata fetching phas
### 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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