wilfred-s commented on a change in pull request #356:
URL:
https://github.com/apache/incubator-yunikorn-core/pull/356#discussion_r781720362
##########
File path: pkg/scheduler/objects/application.go
##########
@@ -827,13 +827,41 @@ func (sa *Application)
tryPlaceholderAllocate(nodeIterator func() NodeIterator,
if ph.released || request.taskGroupName !=
ph.taskGroupName {
continue
}
+ // before we check anything we need to check the
resources equality
+ delta := resources.Sub(ph.AllocatedResource,
request.AllocatedResource)
+ // Any negative value in the delta means that at least
one of the requested resource in the real
+ // allocation is larger than the placeholder. We need
to cancel the placeholder and check the next
+ // placeholder. This should trigger a cleanup of all
the placeholder as a task group is always one size.
Review comment:
Updated comment to be clearer
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