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ASF GitHub Bot commented on FLINK-7974: --------------------------------------- Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/4993#discussion_r150228196 --- Diff: flink-queryable-state/flink-queryable-state-client-java/src/main/java/org/apache/flink/queryablestate/network/Client.java --- @@ -419,20 +440,27 @@ void close() { * @param cause The cause to close the channel with. * @return Channel close future */ - private boolean close(Throwable cause) { + private CompletableFuture<Boolean> close(Throwable cause) { + final CompletableFuture<Boolean> shutdownFuture = new CompletableFuture<>(); if (failureCause.compareAndSet(null, cause)) { - channel.close(); - stats.reportInactiveConnection(); + final CompletableFuture<?> tmp = new CompletableFuture<>(); + channel.close().addListener(finished -> tmp.complete(null)); --- End diff -- result of channel future is ignored. > AbstractServerBase#shutdown does not wait for shutdown completion > ----------------------------------------------------------------- > > Key: FLINK-7974 > URL: https://issues.apache.org/jira/browse/FLINK-7974 > Project: Flink > Issue Type: Bug > Components: Queryable State > Affects Versions: 1.4.0 > Reporter: Till Rohrmann > Assignee: Kostas Kloudas > Priority: Critical > > The {{AbstractServerBase}} does not wait for the completion of its shutdown > when calling {{AbstractServerBase#shutdown}}. This is problematic since it > leads to resource leaks and instable tests such as the > {{AbstractServerTest}}. I propose to let the {{AbstractServerBase#shutdown}} > return a termination future which is completed upon shutdown completion. -- This message was sent by Atlassian JIRA (v6.4.14#64029)