TaiJuWu commented on code in PR #16703:
URL: https://github.com/apache/kafka/pull/16703#discussion_r1697677735
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clients/src/test/java/org/apache/kafka/clients/consumer/KafkaConsumerTest.java:
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@@ -2491,7 +2508,8 @@ public void testCurrentLag(GroupProtocol groupProtocol) {
client.respond(listOffsetsResponse(singletonMap(tp0, 90L)));
consumer.poll(Duration.ofMillis(0));
- assertEquals(OptionalLong.of(40L), consumer.currentLag(tp0));
+ TestUtils.waitForCondition(() ->
OptionalLong.of(40L).equals(consumer.currentLag(tp0)),
+ "Consumer can't get excepted lag.");
Review Comment:
> While this change may allow the test to pass, it suggests to me that the
new consumer is not keeping the semantics for the `currentLag()` API, in that
it should return the correct value _immediately_, not _eventually_.
Hi @kirktrue ,thanks for review.
I think this condition can be removed, let's test with CI.
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