Zhijie Shen created YARN-2401:
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Summary: Rethinking of the HTTP method of
TimelineWebServices#postEntities
Key: YARN-2401
URL: https://issues.apache.org/jira/browse/YARN-2401
Project: Hadoop YARN
Issue Type: Sub-task
Components: timelineserver
Reporter: Zhijie Shen
Assignee: Zhijie Shen
Now TimelineWebServices#postEntities is using POST. However, semantically,
postEntities is creating an entity or append more data into it. POST may not be
the most proper method to for this API.
AFAIK, PUT is used to update the entire resource and supposed to be idempotent.
Therefore, I'm not sure it's an idea to change the method to PUT because once
the entity is created, the following updates are actually appending more data
to the existing one. The best fit should be PATCH, however, it requires the
additional implementation at the web services side. Hence, somebody online
suggested using POST for partial non-idempotent update as well. We need to
think more about it.
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