Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5062#discussion_r153794621
--- Diff:
flink-queryable-state/flink-queryable-state-client-java/src/main/java/org/apache/flink/queryablestate/client/QueryableStateClient.java
---
@@ -108,9 +108,33 @@ public QueryableStateClient(final InetAddress
remoteAddress, final int remotePor
new DisabledKvStateRequestStats());
}
- /** Shuts down the client. */
- public void shutdown() {
- client.shutdown();
+ /**
+ * Shuts down the client and returns a {@link CompletableFuture} that
+ * will be completed when the shutdown process is completed.
+ *
+ * <p>If an exception is thrown for any reason, then the returned future
+ * will be completed exceptionally with that exception.
+ *
+ * @return A {@link CompletableFuture} for further handling of the
+ * shutdown result.
+ */
+ public CompletableFuture<?> shutdownAndHandle() {
+ return client.shutdown();
+ }
+
+ /**
+ * Shuts down the client and waits until shutdown is completed.
+ *
+ * <p>If an exception is thrown, a warning is printed containing
--- End diff --
the warning is logged, not printed (generally implies stdout).
---
