0AyanamiRei opened a new pull request, #65630:
URL: https://github.com/apache/doris/pull/65630
### What problem does this PR solve?
Issue Number: None
Related PR: #64933
Problem Summary: Backport the `information_schema.tables` column-pruning and
single-pass table-status statistics optimization from #64933 to `branch-4.0`.
Source merge commit: `058dfd3794aca46617766173ced5ac5574efff94`.
### Conflict resolution
- Adapted the BE changes to the `branch-4.0` schema scanner layout under
`be/src/pipeline/exec` and `be/src/exec/schema_scanner`, retaining the
required-column collection and adding the branch-compatible
`util/string_util.h` include.
- `branch-4.0` predates the `LocalTablet`/`LocalReplica` split. Kept those
classes absent and ported the single-pass normal-replica statistics logic to
the existing `Tablet`/`Replica` model, with the corresponding test adapted to
`TabletTest`.
- Preserved the branch's JMockit `ExecuteEnv` setup in
`FrontendServiceImplTest` and added only the imports and four status-pruning
tests required by the source PR.
- Preserved Thrift field id `10` for `required_columns`; field id `9`
remains reserved on this maintained branch.
The resulting backport retains the source behavior: lightweight projections
skip tablet-derived status work, while full status queries compute
row/data/index statistics in one tablet traversal.
### Release note
None
### Check List (For Author)
- Test: No need to test (one-time Agent conflict-resolution workflow; build
and test execution were intentionally excluded)
- `build-support/clang-format.sh`
- `build-support/check-format.sh`
- `git diff HEAD^ HEAD --check`
- Behavior changed: No
- Does this need documentation: No
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