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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3409) Add constraint node labels
Date Fri, 27 Mar 2015 16:45:53 GMT
Wangda Tan created YARN-3409:

             Summary: Add constraint node labels
                 Key: YARN-3409
                 URL: https://issues.apache.org/jira/browse/YARN-3409
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Wangda Tan
            Assignee: Wangda Tan

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:
- ACL/priority (Only market team / marke team has priority to use the partition).
Percentage of capacities (Market team has 40% minimum capacity and Dev team has 60% of minimum
capacity of the partition).
- One node can only belong to one partition.
- One resource request can only ask for one partition

Constraints are orthogonal to partition, they’re describing attributes of node’s hardware/software
just for affinity. Some example of constraints:
- 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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