From 5ad3f5ce7922aed7d3656bf4f9326a307d1fe366 Mon Sep 17 00:00:00 2001
From: Anton Petrov <anpetrov@provectus.com>
Date: Thu, 9 Jul 2020 12:40:39 +0300
Subject: [PATCH] Do not wait for a full batch if there's no messages in the
 topic (#77)

---
 .../provectus/kafka/ui/cluster/service/ConsumingService.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kafka-ui-api/src/main/java/com/provectus/kafka/ui/cluster/service/ConsumingService.java b/kafka-ui-api/src/main/java/com/provectus/kafka/ui/cluster/service/ConsumingService.java
index 797d30f57b3..84b87b72ce3 100644
--- a/kafka-ui-api/src/main/java/com/provectus/kafka/ui/cluster/service/ConsumingService.java
+++ b/kafka-ui-api/src/main/java/com/provectus/kafka/ui/cluster/service/ConsumingService.java
@@ -107,6 +107,9 @@ public void emit(FluxSink<ConsumerRecord<Bytes, Bytes>> sink) {
 				while (!sink.isCancelled() && ++pollsCount < MAX_POLLS_COUNT) {
 					ConsumerRecords<Bytes, Bytes> records = consumer.poll(POLL_TIMEOUT_MS);
 					log.info("{} records polled", records.count());
+					if (records.count() == 0) {
+						break;
+					}
 					records.iterator()
 							.forEachRemaining(sink::next);
 				}