AndrewJSchofield commented on code in PR #15803:
URL: https://github.com/apache/kafka/pull/15803#discussion_r1585852808
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clients/src/test/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumerTest.java:
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@@ -1789,6 +1791,33 @@ public void testProcessBackgroundEventsTimesOut() throws
Exception {
}
}
+ /**
+ * Tests that calling {@link Thread#interrupt()} before {@link
KafkaConsumer#poll(Duration)}
+ * causes {@link InterruptException} to be thrown.
+ */
+ @Test
+ public void testPollThrowsInterruptExceptionIfInterrupted() {
+ consumer = newConsumer();
+ final String topicName = "foo";
+ final int partition = 3;
+ final TopicPartition tp = new TopicPartition(topicName, partition);
+
doReturn(Fetch.empty()).when(fetchCollector).collectFetch(any(FetchBuffer.class));
+ Map<TopicPartition, OffsetAndMetadata> offsets = mkMap(mkEntry(tp, new
OffsetAndMetadata(1)));
+ completeFetchedCommittedOffsetApplicationEventSuccessfully(offsets);
+
doReturn(LeaderAndEpoch.noLeaderOrEpoch()).when(metadata).currentLeader(any());
+ consumer.assign(singleton(tp));
+
+ // interrupt the thread and call poll
+ try {
+ Thread.currentThread().interrupt();
+ assertThrows(InterruptException.class, () ->
consumer.poll(Duration.ZERO));
+ } finally {
+ // clear interrupted state again since this thread may be reused
by JUnit
Review Comment:
By calling `Thread.interrupted()`, the code is ensuring that the test does
not exit with the thread still in an interrupted state. I have updated the
comment accordingly.
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