hubgeter opened a new pull request, #45246:
URL: https://github.com/apache/doris/pull/45246
bp #45148
### What problem does this PR solve?
Problem Summary:
Optimize reading of maxcompute partition tables:
1. Introduce batch mode to generate splits for Maxcompute partition tables
to optimize scenarios with a large number of partitions. Control it through the
variable `num_partitions_in_batch_mode`.
2. Introduce catalog parameter `mc.split_cross_partition`. The parameter is
true, which is more friendly to reading partition tables, and false, which is
more friendly to debug.
3. Add `-Darrow.enable_null_check_for_get=false` to be jvm to improve the
efficiency of mc arrow data conversion.
### 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:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [x] 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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