msfroh commented on a change in pull request #1585:
URL: https://github.com/apache/lucene-solr/pull/1585#discussion_r441148085
##########
File path: lucene/core/src/java/org/apache/lucene/index/MergePolicy.java
##########
@@ -399,6 +427,23 @@ public String segString(Directory dir) {
}
return b.toString();
}
+
+ /**
+ * Waits if necessary for at most the given time for all merges.
+ */
+ boolean await(long timeout, TimeUnit unit) {
+ try {
+ CompletableFuture<Void> future =
CompletableFuture.allOf(merges.stream()
+ .map(m -> m.completable).collect(Collectors.toList()).toArray(new
CompletableFuture<?>[0]));
+ future.get(timeout, unit);
+ return true;
+ } catch (InterruptedException e) {
+ Thread.interrupted();
Review comment:
In my change, I remember I originally tried handling the
`InterruptedException` while waiting for the `CountDownLatch` in a similar way,
but it caused an intermittent test failure (in `TestIndexWriterWithThreads`,
maybe?) You might run into the same test failure once you start calling this
`await` method from within `IndexWriter`.
I was able to get the test passing by rethrowing it wrapped in a
`ThreadInterruptedException`.
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