Weiwei Yang created YARN-8112:
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Summary: Relax cardinality check for intra-app affinity placement
constraints
Key: YARN-8112
URL: https://issues.apache.org/jira/browse/YARN-8112
Project: Hadoop YARN
Issue Type: Sub-task
Components: resourcemanager
Reporter: Weiwei Yang
Currently following PC doesn't work
{code:java}
-placement_spec zk=3,IN,NODE,zk
-placement_spec zk=1,IN,NODE,zk
{code}
Expectation: place 3/1 zk containers in any node of the cluster.
This is because when we do cardinality check, PC cannot be satisfied as there
is no "zk" tag placed on any node. But this is a very common user-case, hence
we need to support.
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