nodece commented on code in PR #15454:
URL: https://github.com/apache/pulsar/pull/15454#discussion_r867354811


##########
pulsar-common/src/main/java/org/apache/pulsar/common/util/FutureUtil.java:
##########
@@ -55,6 +57,36 @@ public static CompletableFuture<Object> 
waitForAny(Collection<? extends Completa
         return CompletableFuture.anyOf(futures.toArray(new 
CompletableFuture[0]));
     }
 
+    public static CompletableFuture<Optional<Object>> waitForAny(Collection<? 
extends CompletableFuture<?>> futures,
+                                                       Predicate<Object> 
tester) {
+        return waitForAny(futures).thenCompose(v -> {
+            if (tester.test(v)) {
+                return CompletableFuture.completedFuture(Optional.of(v));
+            }
+            Collection<CompletableFuture<?>> doneFutures = futures.stream()
+                    .filter(f -> f.isDone())
+                    .collect(Collectors.toList());
+            futures.removeAll(doneFutures);
+            Optional<?> value = doneFutures.stream()
+                    .filter(f -> !f.isCompletedExceptionally())
+                    .map(CompletableFuture::join)

Review Comment:
   Thanks for your reply.



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