zclllyybb opened a new pull request, #65791:
URL: https://github.com/apache/doris/pull/65791
…gregation
Problem: non-final streaming aggregation can consume rows directly from its
upstream pipeline, even when separating the pipelines with a local passthrough
exchange is required to match the intended Repeat-to-streaming-aggregation
execution shape. opt_perf_4.1 already carries the thrift field but does not
expose or consume it end to end.
Solution: expose enable_local_exchange_before_agg as a default-enabled
session variable and propagate it to TQueryOptions. StreamingAggOperatorX
requests PASSTHROUGH only for non-final streaming aggregation. The existing
hash-join passthrough priority and explicit shuffled_agg_ids HASH_SHUFFLE
override remain intact; disabling the variable, or receiving an unset field
from an older FE, retains the original distribution behavior.
Validation: ./build.sh --fe; ./build.sh --be -j 48; ./run-fe-ut.sh --run
org.apache.doris.qe.VariableMgrTest; ./run-be-ut.sh --run
--filter=StreamingAggOperatorTest.require_passthrough_local_exchange_before_non_finalize_agg
-j 90. On an isolated FE/BE, an uncached GROUPING SETS query with agg_phase=2
produced REPEAT -> LOCAL_EXCHANGE(PASSTHROUGH) -> STREAMING_AGGREGATION by
default; setting the variable false removed that local exchange while retaining
the streaming aggregation and result rows.
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### 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
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