azagrebin commented on a change in pull request #9512:
[FLINK-13819][coordination] Introduce State for RpcEndpoint
URL: https://github.com/apache/flink/pull/9512#discussion_r316729861
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/RpcEndpoint.java
##########
@@ -323,6 +355,15 @@ public void validateRunsInMainThread() {
assert
MainThreadValidatorUtil.isRunningInExpectedThread(currentMainThread.get());
}
+ /**
+ * Rpc endpoint's state.
+ */
+ public enum State {
Review comment:
The states basically reflect the lifecycle of the RPC Endpoint (as written
in JIRA) and what one can do with it by calling the available methods:
start/stop/close and getting callbacks: onStart and onStop.
Then the concrete endpoints can easier judge about the state in concrete API
calls (also in JIRA).
I can add a jdoc comment about when the transitions happen.
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