Wangda Tan created YARN-3409:
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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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