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[PR #3888] Fix concurrency issue in PregelScratchpad.consume_null_resume #3527

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opened 2026-02-20 17:48:45 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:48:45 -05:00
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Original Pull Request: https://github.com/langchain-ai/langgraph/pull/3888

State: closed
Merged: Yes

  • Need to use a single operation to check if present and remove item from list
  • This doesn't fix the separate issue that parallel tasks claiming a single interrupt value have somewhat undefined behavior (in the sense that they will race to be the first to take it). That will be fixed in a future PR

Closes #3875

**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/3888 **State:** closed **Merged:** Yes --- - Need to use a single operation to check if present and remove item from list - This doesn't fix the separate issue that parallel tasks claiming a single interrupt value have somewhat undefined behavior (in the sense that they will race to be the first to take it). That will be fixed in a future PR Closes #3875
yindo added the pull-request label 2026-02-20 17:48:45 -05:00
yindo closed this issue 2026-02-20 17:48:45 -05:00
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Reference: langchain-ai/langgraph#3527
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Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?