villebro commented on code in PR #43627:
URL: https://github.com/apache/superset/pull/43627#discussion_r3881858355
##########
superset/migrations/versions/2026-08-21_12-00_7e2c9a4f1b83_create_task_dependencies_table.py:
##########
@@ -148,9 +148,22 @@ def upgrade():
"uq_task_subscribers_task_guest", ["task_id", "guest_key"]
)
+ # Liveness marker for orphan detection: the executing worker bumps
+ # ``tasks.last_heartbeat`` on a background thread, and the prune cron reaps
+ # ACTIVE tasks whose heartbeat has gone stale (a dead/orphaned worker). The
+ # index backs the reaper's ``last_heartbeat < now - timeout`` scan.
+ add_columns(
Review Comment:
This is intentional - this is against a feature branch, so no point in
adding multiple separate migrations as the final PR will be squashed to a
single commit when merged to master.
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