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[PR #3891] Improve prepare_single_task trigger checks to linear complexity #3523

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opened 2026-02-20 17:48:44 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:48:44 -05:00
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Original Pull Request: https://github.com/langchain-ai/langgraph/pull/3891

State: closed
Merged: Yes

  • Was O(n^2) due to individual channels created for every conditional edge, including the default cond edge created for Command
  • Now using a single channel per node for all conditional edge / command triggers, reducing to linear complexity
  • Improves run time on sequential(200) from 1.8s to 0.14s
**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/3891 **State:** closed **Merged:** Yes --- - Was O(n^2) due to individual channels created for every conditional edge, including the default cond edge created for Command - Now using a single channel per node for all conditional edge / command triggers, reducing to linear complexity - Improves run time on sequential(200) from 1.8s to 0.14s
yindo added the pull-request label 2026-02-20 17:48:44 -05:00
yindo closed this issue 2026-02-20 17:48:44 -05:00
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Reference: langchain-ai/langgraph#3523
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