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https://issues.apache.org/jira/browse/YUNIKORN-468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17254127#comment-17254127
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Manikandan R edited comment on YUNIKORN-468 at 12/23/20, 3:58 PM:
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[~wilfreds]
{quote}The core just updates the node size and currently stops scheduling new
resources even when the node is over subscribed.{quote}
Would YUNIKORN-466 fix this automatically? I think so.
{quote} in case that the node was shrunk and uses more than the resources
available{quote}
Can we do something similar (more or less) or re-use node.GetAllAllocations
foreach block of drf_preemption_policy#trySurgicalPreemptionOnNode till
difference (old capacity - new capacity) equals total pre-empted resources (sum
of pre-empted resource gained in loop traversal)?
Please share your thoughts.
was (Author: [email protected]):
[~wilfreds]
{quote}The core just updates the node size and currently stops scheduling new
resources even when the node is over subscribed.{quote}
Would YUNIKORN-466 fix this automatically? I think so.
{quote} in case that the node was shrunk and uses more than the resources
available{quote}
Can we re-use node.GetAllAllocations foreach block(more or less) of
drf_preemption_policy#trySurgicalPreemptionOnNode till difference (old capacity
- new capacity) equals total pre-empted resources (sum of pre-empted resource
gained in loop traversal)?
Please share your thoughts.
> Node resource updates should trigger cleanup
> --------------------------------------------
>
> Key: YUNIKORN-468
> URL: https://issues.apache.org/jira/browse/YUNIKORN-468
> Project: Apache YuniKorn
> Issue Type: Improvement
> Components: core - common
> Reporter: Wilfred Spiegelenburg
> Priority: Minor
>
> Updating a node can set the overall size of a node and the resources
> allocated by a different scheduler (co-existence). The core just updates the
> node size and currently stops scheduling new resources even when the node is
> over subscribed.
> We should add a clean up in case that the node was shrunk and uses more than
> the resources available. the clean up should pre-empt enough resources to get
> it below the node size again.
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