Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5038#discussion_r152294984
--- Diff:
flink-queryable-state/flink-queryable-state-client-java/src/main/java/org/apache/flink/queryablestate/network/Client.java
---
@@ -166,28 +167,57 @@ public String getClientName() {
* Shuts down the client and closes all connections.
*
* <p>After a call to this method, all returned futures will be failed.
+ *
+ * @return A {@link CompletableFuture} that will be completed when the
shutdown process is done.
*/
- public void shutdown() {
- if (shutDown.compareAndSet(false, true)) {
+ public CompletableFuture<?> shutdown() {
--- End diff --
should be typed to `Void`.
---
