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https://issues.apache.org/jira/browse/YARN-4023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15249116#comment-15249116
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Sunil G commented on YARN-4023:
-------------------------------
HI [~jianhe],
I have checked below code in {{RMAppManager.createAndPopulateNewRMApp}}. With
this piece of code, even if priority is NOT set in submissionContext, we will
set it with a default priority for any apps (with 0 priority in dflt case).
This will not impact any apps untill we enable app priority from top level.
{code}
// Verify and get the update application priority and set back to
// submissionContext
Priority appPriority = rmContext.getScheduler()
.checkAndGetApplicationPriority(submissionContext.getPriority(), user,
submissionContext.getQueue(), applicationId);
submissionContext.setPriority(appPriority);
{code}
This same code is invoked from {{recoverApplication}} also. So even in rolling
upgrade cases where app is saved to Store w/o priority in submission context,
it will be added wth a priority 0 with above piece of code during recovery.
[~jianhe] will this be fine? or do you see some other problem because of this.
pls share your feedback.
> Publish Application Priority to TimelineServer
> ----------------------------------------------
>
> Key: YARN-4023
> URL: https://issues.apache.org/jira/browse/YARN-4023
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Reporter: Sunil G
> Assignee: Sunil G
> Fix For: 2.8.0
>
> Attachments: 0001-YARN-4023.patch, 0001-YARN-4023.patch,
> ApplicationPage.png, TimelineserverMainpage.png
>
>
> Publish Application priority details to Timeline Server.
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