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https://issues.apache.org/jira/browse/KAFKA-10334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17171586#comment-17171586
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Luis Araujo commented on KAFKA-10334:
-------------------------------------
After creating this issue, I tested the await for the future to be completed
and just then calling *commitTransaction* function. I will leave a similar
example:
{code:java}
Producer<String, String> producer = new KafkaProducer<>(props);
for (int i = 0; i < 100; i++)
producer.send(new ProducerRecord<String, String>("my-topic",
Integer.toString(i), Integer.toString(i))).get();
producer.commitTransaction();{code}
With this code, I'm getting an exception when the message is above (and not
equal to) 1MB when I call *.get* in the Future.
> Transactions not working properly
> ---------------------------------
>
> Key: KAFKA-10334
> URL: https://issues.apache.org/jira/browse/KAFKA-10334
> Project: Kafka
> Issue Type: Bug
> Components: clients, producer
> Affects Versions: 2.1.0, 2.3.0
> Reporter: Luis Araujo
> Priority: Major
>
> I'm using transactions provided by Kafka Producer API in a Scala project
> built with SBT. The dependency used in the project is:
> {code:java}
> "org.apache.kafka" % "kafka-clients" % "2.1.0" {code}
> I followed the documentation and I was expecting that transactions fail when
> I call *.commitTransaction* if some problem is raised when sending a message
> like it's described in the
> [documentation|https://kafka.apache.org/10/javadoc/org/apache/kafka/clients/producer/KafkaProducer.html#send-org.apache.kafka.clients.producer.ProducerRecord-org.apache.kafka.clients.producer.Callback-].
> Unfortunately, when testing this behaviour using a message larger than the
> size accepted by the Kafka broker/cluster, the transactions are not working
> properly.
> I tested with a 3 Kafka broker cluster with 1MB message max size (default
> value):
> - when the message has 1MB, the transaction is aborted and an exception is
> raised when calling *commitTransaction()*
> - when the message is bigger than 1MB, the transaction is completed
> successfully *without* the message being written. No exception is thrown.
> As an example, this means that when I produce 9 messages with 1 KB and 1
> message with 1.1MB in the same transaction, the transaction is completed but
> only 9 messages are written to the Kafka cluster.
> I tested this behaviour with Kafka version 2.1.0 and 2.3.0 in both Kafka
> cluster and Kafka Producer API.
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