mrhhsg commented on PR #67140:
URL: https://github.com/apache/doris/pull/67140#issuecomment-5694826989
<!-- doris-repo-review:v1:begin -->
### Local pipeline review — ✅ PASS
```yaml
schema: doris-repo-review/v1
status: PASS
pr: apache/doris#67140
commit: 7d172fc7fcca0976466ef044672014b92b271d1b
base: 4d7a207363b4bf75b4e200ea35d2b5e2bbc54257
reviewed_at: 2026-09-16T16:59+08:00
reviewer: mrhhsg
model: gpt-6-astra
effort: xhigh
findings: {blocker: 0, major: 0, minor: 0, nit: 0}
rounds: 1
converged: true
```
**Notes for maintainers**
-
`be/src/exec/operator/streaming_aggregation_operator.cpp:359-375`：pass-through
不再收紧 TopN heap；新增 mixed-block/recovery UT 静态检查能够覆盖此前重复候选问题。
-
`be/src/exec/operator/distinct_streaming_aggregation_operator.cpp:204-205`：已有
thread r3860482275 的永久 latch 性能限制仍存在；DYNAMIC hard-limit 的临时预算下降并不必然伴随
low-memory，预算恢复后 distinct 仍不会恢复预去重。本轮不重复报告该已知问题。
- `be/src/exec/operator/streaming_agg_memory_limit.h:43-62`：这是 block
边界的预聚合阈值，不是逐 allocation 的硬内存上限；已有 aggregate-owned heap / serialization scratch
计量限制仍在。
- 本轮为 static-only review，覆盖 8/8 changed files，纯文本 header-hygiene
检查通过；未运行编译、UT、回归或 benchmark，也未将历史测试结果当作本轮验证。
<sub>Reviewed locally with the `doris-repo-review` pipeline. Repository
policy may accept this receipt for the matching commit; it is not a human
Apache approval.</sub>
<!-- doris-repo-review:v1:end -->
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