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https://issues.apache.org/jira/browse/YUNIKORN-1217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17545525#comment-17545525
]
Peter Bacsko commented on YUNIKORN-1217:
----------------------------------------
During today's sync-up, we agreed with [~wilfreds] that the simplest approach
is to sort the retrieved pods based on {{{}CreationTime{}}}. Since drivers are
created earlier than executor, this will always work.
We just have to sort the pod slice in
{{{}AppManagementService.recoverApps(){}}}:
{noformat}
pods, err := m.ListPods()
if err != nil {
log.Logger().Error("failed to list apps",
zap.Error(err))
return recoveringApps, err
}
// put new sort code here
for _, pod := range pods {
app :=
svc.podEventHandler.HandleEvent(general.AddPod, general.Recovery, pod)
recoveringApps[app.GetApplicationID()] = app
}
{noformat}
> Ensure that Spark driver pod is processed before executor pods during recovery
> ------------------------------------------------------------------------------
>
> Key: YUNIKORN-1217
> URL: https://issues.apache.org/jira/browse/YUNIKORN-1217
> Project: Apache YuniKorn
> Issue Type: Sub-task
> Components: shim - kubernetes
> Reporter: Peter Bacsko
> Assignee: Peter Bacsko
> Priority: Major
>
> When running a Spark workload with gang scheduling, the driver and executor
> pods have different annotations.
> It is critical that we process the driver first, because it has the task
> group definitions. Based on
> [https://yunikorn.apache.org/docs/next/user_guide/gang_scheduling/,] the
> executor only needs {{{}yunikorn.apache.org/taskGroupName{}}}.
> So when we add the pods in the recovery code path, we have to start with the
> driver.
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