lianetm commented on code in PR #14557:
URL: https://github.com/apache/kafka/pull/14557#discussion_r1429362412
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumer.java:
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@@ -1119,8 +1125,11 @@ public void commitSync(Map<TopicPartition,
OffsetAndMetadata> offsets, Duration
acquireAndEnsureOpen();
long commitStart = time.nanoseconds();
try {
- CompletableFuture<Void> commitFuture = commit(offsets, true);
- ConsumerUtils.getResult(commitFuture, time.timer(timeout));
+ Timer requestTimer = time.timer(timeout.toMillis());
+ // Commit with a timer to control how long the request should be
retried until it
+ // gets a successful response or non-retriable error.
+ CompletableFuture<Void> commitFuture = commit(offsets, true,
Optional.of(timeout.toMillis()));
+ ConsumerUtils.getResult(commitFuture, requestTimer);
Review Comment:
You got it right regarding the timers. And agree that if the case is that
the request fails, is retried, and the retry response does not arrive in time,
the request fails with a `TimeoutException` (there is even a
[test](https://github.com/apache/kafka/blob/97eecdbac186a7b65228f7de665ebe552bb4a377/clients/src/test/java/org/apache/kafka/clients/consumer/internals/CommitRequestManagerTest.java#L471)
to check that timeout is thrown in that case, seeing it from the angle that
the response did not arrive in time), but agree that it would make more sense
to propagate the original retriable exception.
That could definitely be improved. I already ensure
[here](https://github.com/apache/kafka/blob/97eecdbac186a7b65228f7de665ebe552bb4a377/clients/src/main/java/org/apache/kafka/clients/consumer/internals/CommitRequestManager.java#L564)
that the original exception is propagated when expiring a request before
retrying it (when a failed response is received), but this improvement would
ensure that also happens in the case where a response to the retry is not
received.
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