amoghrajesh opened a new pull request, #76283:
URL: https://github.com/apache/airflow/pull/76283
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The Mapped tasks section of state store documentation describes each map
index as having its own state store namespace, which reads as a guarantee about
identity. It is positional. After a re-expansion over a changed upstream list,
index `N` names a different item, and any state kept across the clear is served
to the wrong one. In the external-job pattern that means reconnecting to a job
submitted for a different item, with the task still reporting success.
Mostly unreachable today: clearing a task instance discards its state by
default since #72100. What remains is `keep_task_state`, and the clear paths
that still keep state unconditionally. The warning scopes itself to those two
and points at #72929 for the second.
It also joins two statements that were never linked: per-index namespacing
here, and "the order of expansion is not guaranteed" in
`dynamic-task-mapping.rst`.
Docs only. No behaviour change, no newsfragment.
related: #72725
related: #72929
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