fix(intake): preserve ATIF step order - #1460
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Signed-off-by: Andrew Suter-Morris <asutermorris@nvidia.com>
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📝 WalkthroughWalkthroughATIF step IDs now use numeric span attributes instead of a dedicated field and ClickHouse column. ClickHouse ordering derives step IDs from that attribute. Studio preserves input order for equal or invalid timestamps. Tests cover ingestion, repository ordering, and span-tree behavior. ChangesATIF step attribute contract
ClickHouse ordering and persistence
Studio stable sorting
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Inline comments:
In `@services/intake/src/nmp/intake/spans/clickhouse_migrations.py`:
- Around line 251-259: The ATIF backfill in the migration must complete
successfully before the migration version is recorded. Update the ALTER TABLE
UPDATE call in the migration function to use the required synchronous mutation
setting, or explicitly wait for its system.mutations entry and propagate
failures before proceeding; add an integration test covering a retained raw ATIF
row and verifying step_id is populated.
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services/intake/src/nmp/intake/repository/clickhouse/span.pyservices/intake/src/nmp/intake/spans/clickhouse_migrations.pyservices/intake/src/nmp/intake/spans/domain.pyservices/intake/src/nmp/intake/spans/ingest/atif_mapping.pyservices/intake/tests/integration/spans/test_atif_ingest.pyservices/intake/tests/integration/spans/test_clickhouse_bootstrap.pyservices/intake/tests/test_atif_v17.pyservices/intake/tests/test_spans_clickhouse_migrations.pyservices/intake/tests/test_spans_clickhouse_repository.pyweb/packages/studio/src/util/intakeTelemetry.test.tsweb/packages/studio/src/util/intakeTelemetry.ts
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asutermo
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Aug 21, 2026
Signed-off-by: Andrew Suter-Morris <asutermorris@nvidia.com>
BrianNewsom
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Aug 21, 2026
Signed-off-by: Andrew Suter-Morris <asutermorris@nvidia.com>
asutermo
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August 21, 2026 21:58
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Inline comments:
In `@services/intake/src/nmp/intake/spans/domain.py`:
- Around line 14-15: Update span ordering to read the legacy nemo_step_id
attribute alongside NEMO_STEP_ID_ATTRIBUTE when determining the ATIF step-order
tie-breaker, preserving the current-key preference and id-based fallback. Add a
regression test covering equal-timestamp historical spans that contain only
nemo_step_id.
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services/intake/src/nmp/intake/spans/domain.pyservices/intake/tests/test_spans_clickhouse_repository.py
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Summary
ATIF steps with identical timestamps previously fell back to span ID ordering and could render out of trajectory order. Intake now stores each direct StepObject's ordinal as the numeric
nemo.step_idspan attribute and uses it only as a query tie-breaker, while Studio preserves the server-provided order.Related Issue
ASE-880: ATIF trace steps render out of order when a producer stamps two steps
Changes
step_idvalues in the existing numeric span attributes asnemo.step_id.nemo.step_idto deterministically order spans with identical start timestamps without changing ClickHouse's physical table sort order.Type of Change
Quality Gates
Verification
Signed-off-by:traileruv run pre-commit run -apasses, or any blocked checks are identified belowTargeted validation:
UV_CACHE_DIR=/tmp/nmp-ase880-dotted-key-unit uv run --frozen pytest services/intake/tests/test_atif_v17.py services/intake/tests/test_spans_clickhouse_repository.py -q— 46 passed.UV_CACHE_DIR=/tmp/nmp-ase880-dotted-key-int uv run --frozen pytest services/intake/tests/integration/spans/test_atif_ingest.py::test_atif_ingest_orders_equal_timestamps_by_step_id -q— 1 passed.UV_CACHE_DIR=/tmp/nmp-ase880-all-unit-cache uv run --frozen pytest services/intake/tests --ignore=services/intake/tests/integration -q— 364 passed.UV_CACHE_DIR=/tmp/nmp-ase880-all-int-cache uv run --frozen pytest services/intake/tests/integration/spans -q— 124 passed.pnpm --dir web/packages/studio lint— passed.pnpm --dir web/packages/studio typecheck— passed.pnpm --dir web/packages/studio test src/util/intakeTelemetry.test.ts— 15 passed.UV_CACHE_DIR=/tmp/nmp-ase880-dotted-key-make-lint make lint— all 17 checks passed.pnpm --dir web/packages/sdk gen:all-force— passed and produced no tracked changes.UV_CACHE_DIR=/tmp/nmp-ase880-dotted-key-precommit flox activate -- env SKIP=helm-docs uv run pre-commit run -a— all applicable hooks passed.helm-docswas skipped because this PR has no Helm changes and the full-repository hook produces unrelated pre-existing README drift.git diff --check origin/main...HEAD— passed.Summary by CodeRabbit
Bug Fixes
Tests