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From chickenlj (GitHub) <git...@apache.org>
Subject [GitHub] [incubator-dubbo] chickenlj opened pull request #3847: Async optimization, altanative to #3738.
Date Wed, 10 Apr 2019 10:45:50 GMT
## What is the purpose of the change

This pull request tries a different approach for achieving the same goal as #3738 by having
Result extends CompletionStage and Future directly.

After finishing the code in this pull request, I strongly suggest using the way in #3738.
Here are some drawbacks I found doing this PR:
1.  CompletionStage is not convenient enough when programming, most of the time you will need
CompletableFuture, but because Result itself is an Interface and most of the method uses Result
instead of concrete Result class so you will only be able to interact with CompletionStage.
2. We only need very few callback methods provided by CompletionStage

## Brief changelog


## Verifying this change


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[ Full content available at: https://github.com/apache/incubator-dubbo/pull/3847 ]
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