Fix backward compat: fall back to v1 update endpoint#387
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…or < v5 The /api/tasks/update-v2 endpoint introduced in SDK 1.3.5 only exists on Orkes Conductor v5+. Customers on older instances (e.g. v4.x) receive a 404, causing all task updates to fail. Changes: - On HTTP 404 from update_task_v2, automatically fall back to the v1 update_task endpoint and set _use_update_v2=False for the runner lifetime - Non-404 API errors continue to retry with v2 (no change in behaviour) - Tight execute loop preserved for v1: after each v1 update, immediately poll for the next task rather than waiting for the polling interval - Same fix applied to both TaskRunner (sync) and AsyncTaskRunner - 7 new unit tests covering fallback, flag behaviour, and tight loop Fixes: task updates failing with HTTP 404 when SDK 1.3.5+ is used against Orkes Conductor instances older than major version 5. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
manan164
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v1r3n
approved these changes
Mar 19, 2026
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The /api/tasks/update-v2 endpoint introduced in SDK 1.3.5 only exists on Conductor v5+. Customers on older instances (e.g. v4.x) receive a 404, causing all task updates to fail.
Changes:
Fixes: task updates failing with HTTP 404 when SDK 1.3.5+ is used against Conductor instances older than major version 5.