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https://issues.apache.org/jira/browse/AIRFLOW-374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Imberman closed AIRFLOW-374.
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Resolution: Auto Closed
> Kill task instances that haven't been able to heartbeat for a while
> -------------------------------------------------------------------
>
> Key: AIRFLOW-374
> URL: https://issues.apache.org/jira/browse/AIRFLOW-374
> Project: Apache Airflow
> Issue Type: Improvement
> Components: operators
> Reporter: Paul Yang
> Assignee: Paul Yang
> Priority: Major
> Fix For: 1.8.0
>
>
> A task run by the LocalTaskJob periodically updates a timestamp to indicate
> that the task is still alive and running. If the task is unable to update
> this timestamp for a long time (for example, due to DB connection errors),
> the scheduler may reschedule the task to run again. In such a case, it's
> possible that two instances of the task are running. The task can monitor the
> time since last heartbeat and kill itself to prevent such cases.
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