Zhijie Shen created YARN-2302:
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Summary: Refactor TimelineWebServices
Key: YARN-2302
URL: https://issues.apache.org/jira/browse/YARN-2302
Project: Hadoop YARN
Issue Type: Sub-task
Components: timelineserver
Reporter: Zhijie Shen
Assignee: Zhijie Shen
Now TimelineWebServices contains non-trivial logic to process the HTTP
requests, manipulate the data, check the access, and interact with the timeline
store.
I propose the move the data-oriented logic to a middle layer (so called
TimelineDataManager), and TimelineWebServices only processes the requests, and
call TimelineDataManager to complete the remaining tasks.
By doing this, we make the generic history module reuse TimelineDataManager
internally (YARN-2033), invoking the putting/getting methods directly.
Otherwise, we have to send the HTTP requests to TimelineWebServices to query
the generic history data, which is not an efficient way.
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