keith-turner commented on code in PR #2752:
URL: https://github.com/apache/accumulo/pull/2752#discussion_r899635571
##########
core/src/main/java/org/apache/accumulo/core/util/CompletableFutureUtil.java:
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@@ -49,4 +51,26 @@ public static <T> CompletableFuture<T>
merge(List<CompletableFuture<T>> futures,
return futures.get(0);
}
+ /**
+ * Iterate some function until a given condition is met.
+ *
+ * The step function should always return an asynchronous {@code
+ * CompletableFuture} in order to avoid stack overflows.
+ */
+ public static <T> CompletableFuture<T>
iterateUntil(Function<T,CompletableFuture<T>> step,
Review Comment:
A unit test for this would nice. Could test 0,1,2,3, 1000 iterations and
ensure the results are correct. Could maybe also test an exception during
iteration.
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