kubernetes#60525 introduced
Balanced attached node volumes feature gate to include volume
count for prioritizing nodes. The reason for introducing this
flag was its usefulness in Red Hat OpenShift Online environment
which is not being used any more. So, removing the flag
as it helps in maintainability of the scheduler code base
as mentioned at kubernetes#101489 (comment)
The pInfo.Timestamp is refreshed but the sort in activeQ or podBackoffQ is not be updated when pod is already present in the backoff or active queue.
AddUnschedulableIfNotPresent() return error if pod is already present in the backoff or active queue, and there is no re-add.
So refresh pInfo.Timestamp when the pod is not present in the three sub-queues, otherwise need to update the order of the pod in the active or backoff queue, for example p.activeQ.Update(pInfo)
* Rename const for topology.../zone
* Rename const for topology.../region
* Rename const for failure-domain.../zone
* Rename const for failure-domain.../region
* Restore old names for compat
This change enriches the testcase of `TestPriorityQueue_MoveAllToActiveOrBackoffQueue`
to cover the case that pods in the unschedulableQ could be moved to activeQ after the
backing off.
Signed-off-by: Dave Chen <dave.chen@arm.com>
This is a performance optimization that reduces the overhead of inter-pod affinity PreFilter calculaitons. Basically
eliminates that overhead when no pods in the cluster use required pod anti-affinity. This offered 20% improvement on 5k clusters for preferred anti-affinity benchmarks.
This commit transforms the next() function of the scheduler node
tree into a listNodes() function that directly returns a list of
nodes, going through the zones in a round-robin fashion. This
removes the flawed logic of the next() function.
The apiserver is expected to send pod deletion events that might arrive at a different time. However, sometimes a node could be recreated without its pods being deleted.
Partial revert of https://github.com/kubernetes/kubernetes/pull/86964
Signed-off-by: Aldo Culquicondor <acondor@google.com>
Change-Id: I51f683e5f05689b711c81ebff34e7118b5337571
