iemre commented on code in PR #110:
URL: 
https://github.com/apache/flink-connector-aws/pull/110#discussion_r1367748848


##########
flink-connector-aws/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/internals/publisher/fanout/FanOutShardSubscriber.java:
##########
@@ -249,22 +262,21 @@ private FanOutShardSubscription 
openSubscriptionToShard(final StartingPosition s
 
         kinesis.subscribeToShard(request, responseHandler);
 
-        boolean subscriptionEstablished =
-                waitForSubscriptionLatch.await(
+        boolean subscriptionTimedOut =
+                !waitForSubscriptionLatch.await(
                         subscribeToShardTimeout.toMillis(), 
TimeUnit.MILLISECONDS);
 
-        if (!subscriptionEstablished) {
+        if (subscriptionTimedOut) {
             final String errorMessage =
                     "Timed out acquiring subscription - " + shardId + " (" + 
consumerArn + ")";
             LOG.error(errorMessage);
             subscription.cancelSubscription();
-            handleError(
-                    new RecoverableFanOutSubscriberException(new 
TimeoutException(errorMessage)));

Review Comment:
   I believe the intention here might have been to retry `TimeoutException` 
indefinitely. But I believe by wrapping it in 
RecoverableFanOutSubscriberException, we might have made it retriable (retry 
count subject to provided retry config)



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