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LangChain Forum - Latest posts

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Pre-interrupt() code re-runs on resume — anti-pattern, or...
Anthony · 2026-05-28 · via LangChain Forum - Latest posts

Hello! I want to talk about point #3 from the interrupt docs (pre-interrupt code re-runs on resume) In practice this is biting my team a bit: We have logger.info(…) calls before interrupt() and now see duplicate log lines on every resume. We have nodes whose pre-interrupt code is meant to run exactly once per interrupt so that a human can verify the work. To make that hold we’d have to split those nodes in two, pre-interrupt work in one node, and the interrupt + post-interrupt work in a succe...