Daniel Templeton created YARN-4457:
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Summary: Cleanup unchecked types for EventHandler
Key: YARN-4457
URL: https://issues.apache.org/jira/browse/YARN-4457
Project: Hadoop YARN
Issue Type: Improvement
Affects Versions: 2.7.1
Reporter: Daniel Templeton
Assignee: Daniel Templeton
The EventHandler class is often used in an untyped context resulting in a bunch
of warnings about unchecked usage. The culprit is the
{{Dispatcher.getHandler()}} method. Fixing the typing on the method to return
{{EventHandler<Event>}} instead of {{EventHandler}} clears up the errors and
doesn't not introduce any incompatible changes. In the case that some code
does:
{code}
EventHandler h = dispatcher.getHandler();
{code}
it will still work and will issue a compiler warning about raw types. There
are, however, no instances of this issue in the current source base.
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