[KAFKA-3450] Producer blocks on send to topic that doesn't exist if auto create is disabled

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 0.9.0.1
• Component/s: producer
• Assignee: Unassigned
• Reporter: Michal Turek
• Created: 23/Mar/16 12:02
• Updated: 24/May/20 21:31

Description

producer.send() is blocked for max.block.ms (default 60 seconds) if the destination topic doesn't exist and if their automatic creation is disabled. Warning from NetworkClient containing UNKNOWN_TOPIC_OR_PARTITION is logged every 100 ms in a loop until the 60 seconds timeout expires, but the operation is not recoverable.

Preconditions

• Kafka 0.9.0.1 with default configuration and auto.create.topics.enable=false
• Kafka 0.9.0.1 clients.

Example minimalist code

https://github.com/avast/kafka-tests/blob/master/src/main/java/com/avast/kafkatests/othertests/nosuchtopic/NoSuchTopicTest.java

/**
 * Test of sending to a topic that does not exist while automatic creation of topics is disabled in Kafka (auto.create.topics.enable=false).
 */
public class NoSuchTopicTest {
    private static final Logger LOGGER = LoggerFactory.getLogger(NoSuchTopicTest.class);

    public static void main(String[] args) {
        Properties properties = new Properties();
        properties.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
        properties.setProperty(ProducerConfig.CLIENT_ID_CONFIG, NoSuchTopicTest.class.getSimpleName());
        properties.setProperty(ProducerConfig.MAX_BLOCK_MS_CONFIG, "1000"); // Default is 60 seconds

        try (Producer<String, String> producer = new KafkaProducer<>(properties, new StringSerializer(), new StringSerializer())) {
            LOGGER.info("Sending message");
            producer.send(new ProducerRecord<>("ThisTopicDoesNotExist", "key", "value"), (metadata, exception) -> {
                if (exception != null) {
                    LOGGER.error("Send failed: {}", exception.toString());
                } else {
                    LOGGER.info("Send successful: {}-{}/{}", metadata.topic(), metadata.partition(), metadata.offset());
                }
            });

            LOGGER.info("Sending message");
            producer.send(new ProducerRecord<>("ThisTopicDoesNotExistToo", "key", "value"), (metadata, exception) -> {
                if (exception != null) {
                    LOGGER.error("Send failed: {}", exception.toString());
                } else {
                    LOGGER.info("Send successful: {}-{}/{}", metadata.topic(), metadata.partition(), metadata.offset());
                }
            });
        }
    }
}

Related output

2016-03-23 12:44:37.725 INFO  c.a.k.o.nosuchtopic.NoSuchTopicTest [main]: Sending message (NoSuchTopicTest.java:26)
2016-03-23 12:44:37.830 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 0 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:37.928 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 1 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.028 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 2 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.130 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 3 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.231 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 4 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.332 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 5 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.433 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 6 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.534 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 7 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.635 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 8 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.736 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 9 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.772 ERROR c.a.k.o.nosuchtopic.NoSuchTopicTest [main]: Send failed: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 35 ms. (NoSuchTopicTest.java:29)
2016-03-23 12:44:38.773 INFO  c.a.k.o.nosuchtopic.NoSuchTopicTest [main]: Sending message (NoSuchTopicTest.java:35)
2016-03-23 12:44:38.837 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 10 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:38.938 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 11 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.039 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 12 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.140 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 13 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.242 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 14 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.345 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 15 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.447 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 16 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.549 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 17 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.651 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 18 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.752 WARN  o.a.kafka.clients.NetworkClient     [kafka-producer-network-thread | NoSuchTopicTest]: Error while fetching metadata with correlation id 19 : {ThisTopicDoesNotExist=UNKNOWN_TOPIC_OR_PARTITION, ThisTopicDoesNotExistToo=UNKNOWN_TOPIC_OR_PARTITION} (NetworkClient.java:582)
2016-03-23 12:44:39.774 ERROR c.a.k.o.nosuchtopic.NoSuchTopicTest [main]: Send failed: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 21 ms. (NoSuchTopicTest.java:38)
2016-03-23 12:44:39.774 INFO  o.a.k.c.producer.KafkaProducer      [main]: Closing the Kafka producer with timeoutMillis = 9223372036854775807 ms. (KafkaProducer.java:613)

Known workaround

• Configure max.block.ms = 0 in producer to prevent blocking and return from send() immediately. But be careful, I'm not sure if is it safe and can't cause something even worse

Issue Links

• is related to: KAFKA-3539 KafkaProducer.send() may block even though it returns the Future
• is related to: KAFKA-2948 Kafka producer does not cope well with topic deletions
• relates to: KAFKA-8178 KafkaProducer#send(ProducerRecord,Callback) may block for up to 60 seconds