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Merge pull request #41271 from mrgiles/31719_clarify_job_completionMode_rare_condition 

Add note for when multiple pods are started for the same job index
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Kubernetes Prow Robot 2023-05-30 16:31:43 -07:00 committed by GitHub
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content/en/docs/concepts/workloads/controllers/job.md
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@ -290,8 +290,13 @@ Jobs with _fixed completion count_ - that is, jobs that have non null
The Job is considered complete when there is one successfully completed Pod
for each index. For more information about how to use this mode, see
[Indexed Job for Parallel Processing with Static Work Assignment](/docs/tasks/job/indexed-parallel-processing-static/).
Note that, although rare, more than one Pod could be started for the same
index, but only one of them will count towards the completion count.
{{< note >}}
Although rare, more than one Pod could be started for the same index (due to various reasons such as node failures,
kubelet restarts, or Pod evictions). In this case, only the first Pod that completes successfully will
count towards the completion count and update the status of the Job. The other Pods that are running
or completed for the same index will be deleted by the Job controller once they are detected.
{{< /note >}}
## Handling Pod and container failures