[jira] [Created] (YARN-8112) Relax cardinality check for intra-app affinity placement constraints

["Weiwei Yang (JIRA)" <ji...@apache.org>]

Weiwei Yang created YARN-8112:
---------------------------------

             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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