Karthik Kambatla created YARN-4719:
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Summary: Add a helper library to maintain node state and allows
common queries
Key: YARN-4719
URL: https://issues.apache.org/jira/browse/YARN-4719
Project: Hadoop YARN
Issue Type: Improvement
Components: scheduler
Affects Versions: 2.8.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
The scheduler could use a helper library to maintain node state and allowing
matching/sorting queries. Several reasons for this:
# Today, a lot of the node state management is done separately in each
scheduler. Having a single library will take us that much closer to reducing
duplication among schedulers.
# Adding a filtering/matching API would simplify node labels and locality
significantly.
# An API that returns a sorted list for a custom comparator would help
YARN-1011 where we want to sort by allocation and utilization for
continuous/asynchronous and opportunistic scheduling respectively.
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