[jira] [Created] (FLINK-12873) Create a separate maven module for Shuffle API

[Shang Yuanchun (Jira)]

Andrey Zagrebin created FLINK-12873:
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             Summary: Create a separate maven module for Shuffle API
                 Key: FLINK-12873
                 URL: https://issues.apache.org/jira/browse/FLINK-12873
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Configuration, Runtime / Network
            Reporter: Andrey Zagrebin


At the moment, shuffle service API is a part of flink-runtime maven module. The implementers of other shuffle services will have to depend on the fat dependency of flink-runtime. We should consider factoring out the shuffle API interfaces to a separate maven module which depends only on flink-core. Later we can consider the same for the custom high availability services.

The final structure could be e.g. (up to discussion):
 * flink-runtime (already includes default shuffle and high availability implementations)
 * flink-runtime-extensions
 ** flink-runtime-extensions-core
 ** flink-shuffle-extensions-api
 ** flink-high-availability-extensions-api



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