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GAP-PAR-010: Fork-Join Process Pattern overview
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GAP-PAR-010: Fork-Join Process Pattern
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GAP-PAR-010: Fork-Join Process Pattern
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# GAP-PAR-010: Fork-Join Process Pattern
| Field | Value |
|-------|-------|
| Category | parallelization |
| Priority | Medium |
| Effort | L |
| Status | Missing |
## Description
Enable a fork-join pattern where a process forks into parallel branches that inherit parent context and rejoin at a synchronization point. Reframed from CC agent forking to babysitter process-level fork-join.
## Current State
No equivalent. Sub-harness invocations do not inherit parent context. No synchronization points for parallel branches.
## Target State
Process definitions can express fork-join: spawn parallel branches that inherit parent state, execute independently, and rejoin. Branch results aggregated at join point. Failed branches retried independently.
## Dependencies
- [GAP-PAR-003](../parallelization/GAP-PAR-003.md) -- multi-harness parallel dispatch
- [GAP-PROC-002](../process-composition/GAP-PROC-002.md) -- process nesting
## Key Files
| Component | Path |
|-----------|------|
| Process context | `packages/babysitter-sdk/src/runtime/processContext.ts` |
| Task batching | `packages/babysitter-sdk/src/tasks/batching.ts` |
## Recommendation
Phase 3 implementation. Define fork-join as a first-class pattern in process definitions, with branch context inheritance and join-point aggregation.
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- page:docs-harness-features-backlog·PageHarness Features Backlog: Gap Analysis (Restructured)