Wangda Tan created YARN-2494:
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Summary: [YARN-796] Node label manager API and storage
implementations
Key: YARN-2494
URL: https://issues.apache.org/jira/browse/YARN-2494
Project: Hadoop YARN
Issue Type: Sub-task
Components: resourcemanager
Reporter: Wangda Tan
Assignee: Wangda Tan
This JIRA includes APIs and storage implementations of node label manager,
NodeLabelManager is an abstract class used to manage labels of nodes in the
cluster, it has APIs to query/modify
- Nodes according to given label
- Labels according to given hostname
- Add/remove labels
- Set labels of nodes in the cluster
- Persist/recover changes of labels/labels-on-nodes to/from storage
And it has two implementations to store modifications
- Memory based storage: It will not persist changes, so all labels will be lost
when RM restart
- FileSystem based storage: It will persist/recover to/from FileSystem (like
HDFS), and all labels and labels-on-nodes will be recovered upon RM restart
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