Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/3198#discussion_r97540340 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/state/AbstractStateBackend.java --- @@ -66,4 +66,9 @@ public OperatorStateBackend createOperatorStateBackend( String operatorIdentifier) throws Exception { return new DefaultOperatorStateBackend(env.getUserClassLoader()); } + + @Override + public void close() throws Exception { + + } --- End diff -- `AbstractStateBackend` has never been part of the public API. Given that, we won't break at least the API stability promise.
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