feat: add Map Step Output Aggregation #217

jumski · 2025-09-17T07:08:39Z

This PR implements output aggregation for map steps, completing the critical functionality needed for map steps to pass their results to dependent steps.

What this adds:

Aggregates outputs from all map step tasks into a single array when the step completes
Preserves task_index ordering in the aggregated output array
Handles edge cases including empty maps (0 tasks) and NULL outputs from individual tasks
Optimizes map-to-map data flow to avoid unnecessary aggregation/decomposition cycles
Ensures dependent steps receive properly aggregated arrays from completed map steps

Context:

Map steps spawn N tasks to process array elements in parallel. This PR ensures their outputs are properly combined back into an array for consumption by downstream steps, completing the map
step infrastructure in the SQL core layer.

changeset-bot · 2025-09-17T07:08:42Z

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jumski · 2025-09-17T07:09:06Z

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nx-cloud · 2025-09-17T07:09:32Z

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pkgs/core/supabase/migrations/20250917115352_pgflow_temp_handle_map_output_aggregation.sql

github-actions · 2025-10-05T19:37:57Z

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Reflects ongoing work on map step output aggregation, related migration, testing, and documentation efforts, along with current implementation status and pending tasks for map step support in the project.

graphite-app · 2025-10-07T08:28:21Z

Merge activity

Oct 7, 8:28 AM UTC: jumski added this pull request to the Graphite merge queue.
Oct 7, 8:29 AM UTC: CI is running for this pull request on a draft pull request (#232) due to your merge queue CI optimization settings.
Oct 7, 8:29 AM UTC: Merged by the Graphite merge queue via draft PR: #232.

This PR implements output aggregation for map steps, completing the critical functionality needed for map steps to pass their results to dependent steps. What this adds: - Aggregates outputs from all map step tasks into a single array when the step completes - Preserves task_index ordering in the aggregated output array - Handles edge cases including empty maps (0 tasks) and NULL outputs from individual tasks - Optimizes map-to-map data flow to avoid unnecessary aggregation/decomposition cycles - Ensures dependent steps receive properly aggregated arrays from completed map steps Context: Map steps spawn N tasks to process array elements in parallel. This PR ensures their outputs are properly combined back into an array for consumption by downstream steps, completing the map step infrastructure in the SQL core layer.

jumski mentioned this pull request Sep 17, 2025

feat: enhance start_tasks with conditional input logic and add array handling migration #216

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jumski temporarily deployed to preview September 17, 2025 07:09 — with GitHub Actions Inactive

jumski changed the title ~~chore: update PLAN.md with current feature and task statuses~~ feat: add Map Step Output Aggregation Sep 17, 2025

jumski marked this pull request as ready for review September 17, 2025 07:12

jumski force-pushed the 09-17-add-map-step-output-aggregation branch from 1cc39ef to 93cd2af Compare September 17, 2025 10:54

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jumski force-pushed the 09-17-add-map-step-output-aggregation branch from 93cd2af to a61429b Compare September 17, 2025 12:07

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jumski force-pushed the 09-17-add-map-step-output-aggregation branch from a61429b to b01eb63 Compare September 17, 2025 13:10

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jumski mentioned this pull request Sep 18, 2025

feat: Add .map() Method to Flow DSL for Map Step Support #218

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jumski force-pushed the 09-17-add-map-step-output-aggregation branch from b77f743 to 2b1f97e Compare September 18, 2025 07:32

jumski mentioned this pull request Sep 18, 2025

chore: improve verify-schemas-synced and regenerate-temp-migration #219

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This was referenced Sep 18, 2025

Fix Orphaned Messages on Run Failure #220

Closed

feat: add task_index attribute to step_task_record and start_tasks function #221

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test: add integration tests for flows with map steps #222

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jumski force-pushed the 09-17-add-map-step-output-aggregation branch from 7422f2a to c1c4c34 Compare October 5, 2025 18:59

jumski force-pushed the 09-16-handle-arrays-in-start-tasks branch from 781e413 to 53ca34b Compare October 5, 2025 18:59

jumski mentioned this pull request Oct 5, 2025

docs: improve documentation and READMEs to explain map/array steps #228

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jumski force-pushed the 09-17-add-map-step-output-aggregation branch from c1c4c34 to 8ec0268 Compare October 5, 2025 19:20

jumski force-pushed the 09-16-handle-arrays-in-start-tasks branch from 53ca34b to 99d14b5 Compare October 5, 2025 19:20

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jumski mentioned this pull request Oct 6, 2025

fix: remove temp migrations and prepare stack to be merged #230

Closed

chore: update PLAN.md with current feature and task statuses

02056ce

Reflects ongoing work on map step output aggregation, related migration, testing, and documentation efforts, along with current implementation status and pending tasks for map step support in the project.

jumski force-pushed the 09-16-handle-arrays-in-start-tasks branch from 99d14b5 to e87df3c Compare October 6, 2025 15:25

jumski force-pushed the 09-17-add-map-step-output-aggregation branch from 8ec0268 to 02056ce Compare October 6, 2025 15:25

jumski mentioned this pull request Oct 6, 2025

fix: typecheck tests using strict tsc mode #231

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graphite-app bot closed this Oct 7, 2025

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