Stavros Kontopoulos updated SPARK-23485:
    Comment: was deleted

(was: [~liyinan926] I understand the default behavior of the kubernetes 
scheduler (it makes the decisions, apps dont make them) but there is an alpha 
feature there Taint based Evictions, to help with better decisions or different 
ones right?

"*Taint based Evictions (alpha feature)*: A per-pod-configurable eviction 
behavior when there are node problems, which is described in the next section." 
What is wrong with that in this case, what If I want to limit where something 
runs on?)

> Kubernetes should support node blacklist
> ----------------------------------------
>                 Key: SPARK-23485
>                 URL: https://issues.apache.org/jira/browse/SPARK-23485
>             Project: Spark
>          Issue Type: New Feature
>          Components: Kubernetes, Scheduler
>    Affects Versions: 2.3.0
>            Reporter: Imran Rashid
>            Priority: Major
> Spark's BlacklistTracker maintains a list of "bad nodes" which it will not 
> use for running tasks (eg., because of bad hardware).  When running in yarn, 
> this blacklist is used to avoid ever allocating resources on blacklisted 
> nodes: 
> https://github.com/apache/spark/blob/e836c27ce011ca9aef822bef6320b4a7059ec343/resource-managers/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala#L128
> I'm just beginning to poke around the kubernetes code, so apologies if this 
> is incorrect -- but I didn't see any references to 
> {{scheduler.nodeBlacklist()}} in {{KubernetesClusterSchedulerBackend}} so it 
> seems this is missing.  Thought of this while looking at SPARK-19755, a 
> similar issue on mesos.

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