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https://issues.apache.org/jira/browse/YARN-10219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17079056#comment-17079056
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Prabhu Joseph commented on YARN-10219:
--------------------------------------

[~eyang] Thanks for the patch. The patch looks good to me. Can you fix the 
checkstyle issues. Thanks.



> YARN service placement constraints is broken
> --------------------------------------------
>
>                 Key: YARN-10219
>                 URL: https://issues.apache.org/jira/browse/YARN-10219
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 3.1.0, 3.2.0, 3.1.1, 3.1.2, 3.3.0, 3.2.1, 3.1.3
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Major
>         Attachments: YARN-10219.001.patch, YARN-10219.002.patch, 
> YARN-10219.003.patch
>
>
> YARN service placement constraint does not work with node label nor node 
> attributes. Example of placement constraints: 
> {code} 
>       "placement_policy": {
>         "constraints": [
>           {
>             "type": "AFFINITY",
>             "scope": "NODE",
>             "node_attributes": {
>               "label":["genfile"]
>             },
>             "target_tags": [
>               "ping"
>             ] 
>           }
>         ]
>       },
> {code}
> Node attribute added: 
> {code} ./bin/yarn nodeattributes -add "host-3.example.com:label=genfile" 
> {code} 
> Scheduling activities shows: 
> {code} <diagnostic> Node does not match partition or placement constraints, 
> unsatisfied PC expression="in,node,ping", target-type=ALLOCATION_TAG 
> </diagnostic>
>  <count>1</count>
>  <nodeIds>host-3.example.com:45454</nodeIds>{code}



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