BiteTheDDDDt opened a new pull request, #65599:
URL: https://github.com/apache/doris/pull/65599
### What problem does this PR solve?
Issue Number: None
Related PR: #64851
Problem Summary: Backport #64851 to branch-4.1. Large global runtime filters
are currently published directly from the merge coordinator to every scan
target, causing repeated large RPC attachments. This backport adds adaptive
tree publish controlled by `runtime_filter_tree_publish_max_send_bytes`.
The branch-4.1 adaptation keeps its `DummyBrpcCallback` and query-context
lifetime model, and falls back to direct publish for legacy targets without
fragment IDs. The `TQueryOptions` field keeps master field id `225` for wire
compatibility.
### Release note
Add session variable `runtime_filter_tree_publish_max_send_bytes` to control
adaptive global runtime filter tree publish. Set it to 0 to disable tree
publish.
### Check List (For Author)
- Test:
- Generated Thrift and protobuf sources with `./generated-source.sh
noclean`
- `./run-fe-ut.sh --run org.apache.doris.qe.SessionVariablesTest`
- 9 tests passed, 0 failures, 0 errors
- `runtime_filter_mgr.cpp` and `internal_service.cpp` passed
`-fsyntax-only` with the branch-4.1 release compile commands
- `clang-format --dry-run --Werror` on all changed C++ files
- `git diff --check upstream/branch-4.1..HEAD`
- Behavior changed: Yes. Large global runtime filters can be relayed through
an adaptive publish tree instead of direct coordinator fanout.
- Does this need documentation: No
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