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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_r150228810 --- Diff: flink-queryable-state/flink-queryable-state-client-java/src/main/java/org/apache/flink/queryablestate/network/Client.java --- @@ -483,27 +511,31 @@ private boolean close(Throwable cause) { @Override public void onRequestResult(long requestId, RESP response) { TimestampedCompletableFuture pending = pendingRequests.remove(requestId); - if (pending != null && pending.complete(response)) { + if (pending != null && !pending.isDone()) { long durationMillis = (System.nanoTime() - pending.getTimestamp()) / 1_000_000L; stats.reportSuccessfulRequest(durationMillis); + pending.complete(response); } } @Override public void onRequestFailure(long requestId, Throwable cause) { TimestampedCompletableFuture pending = pendingRequests.remove(requestId); - if (pending != null && pending.completeExceptionally(cause)) { + if (pending != null && !pending.isDone()) { stats.reportFailedRequest(); + pending.completeExceptionally(cause); --- End diff -- Same here? > 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)