Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/3295#discussion_r101827724
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/concurrent/FutureUtils.java
---
@@ -88,4 +100,104 @@ public RetryException(Throwable cause) {
super(cause);
}
}
+
+ //
------------------------------------------------------------------------
+ // composing futures
+ //
------------------------------------------------------------------------
+
+ /**
+ * Creates a future that is complete once multiple other futures
completed.
+ * The ConjunctFuture fails (completes exceptionally) once one of the
Futures in the
+ * conjunction fails.
+ *
+ * <p>The ConjunctFuture gives access to how many Futures in the
conjunction have already
+ * completed successfully, via {@link
ConjunctFuture#getNumFuturesCompleted()}.
+ *
+ * @param futures The futures that make up the conjunction. No null
entries are allowed.
+ * @return The ConjunctFuture that completes once all given futures are
complete (or one fails).
+ */
+ public static ConjunctFuture combineAll(Collection<? extends Future<?>>
futures) {
+ checkNotNull(futures, "futures");
+ checkArgument(!futures.isEmpty(), "futures is empty");
--- End diff --
Yes, will change that...
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