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From "Konstantinos Karanasos (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3409) Support Node Attribute functionality
Date Wed, 26 Jul 2017 18:50:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-3409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102100#comment-16102100
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Konstantinos Karanasos commented on YARN-3409:
----------------------------------------------

We can use brackets instead of square brackets: {{node1:java=8(string),ssd=false(boolean)}}.
Using {{:}} both for the node and the data type will lead to confusion I am afraid. In the
expression {{n1:java=jdk8,n2:boolean=false}}, one could read it as node n1 has an attribute
java=jdk8, and node n2 has an attribute boolean=false, while another can think that n2 is
the name of an attribute in n1.

> Support Node Attribute functionality
> ------------------------------------
>
>                 Key: YARN-3409
>                 URL: https://issues.apache.org/jira/browse/YARN-3409
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: api, capacityscheduler, client
>            Reporter: Wangda Tan
>            Assignee: Naganarasimha G R
>         Attachments: 3409-apiChanges_v2.pdf (4).pdf, Constraint-Node-Labels-Requirements-Design-doc_v1.pdf,
YARN-3409.WIP.001.patch
>
>
> Specify only one label for each node (IAW, partition a cluster) is a way to determinate
how resources of a special set of nodes could be shared by a group of entities (like teams,
departments, etc.). Partitions of a cluster has following characteristics:
> - Cluster divided to several disjoint sub clusters.
> - ACL/priority can apply on partition (Only market team / marke team has priority to
use the partition).
> - Percentage of capacities can apply on partition (Market team has 40% minimum capacity
and Dev team has 60% of minimum capacity of the partition).
> Attributes are orthogonal to partition, they’re describing features of node’s hardware/software
just for affinity. Some example of attributes:
> - glibc version
> - JDK version
> - Type of CPU (x86_64/i686)
> - Type of OS (windows, linux, etc.)
> With this, application can be able to ask for resource has (glibc.version >= 2.20
&& JDK.version >= 8u20 && x86_64).



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