[GitHub] sijie opened a new issue #3293: [IO] [Kafka] Heartbeat must be set lower than the session timeout

[GitBox <gi...@apache.org>]

sijie opened a new issue #3293: [IO] [Kafka] Heartbeat must be set lower than the session timeout
URL: https://github.com/apache/pulsar/issues/3293
 
 
   #### Expected behavior
   
   Kafka source connector should be able to run when changing session timeout ms to be less than 10s
   
   #### Actual behavior
   
   localrun throws exception.
   
   ```
   Exception in thread "Kafka Source Thread" org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
   	at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:717)
   	at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:597)
   	at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:579)
   	at org.apache.pulsar.io.kafka.KafkaAbstractSource.lambda$start$0(KafkaAbstractSource.java:103)
   	at java.lang.Thread.run(Thread.java:748)
   Caused by: java.lang.IllegalArgumentException: Heartbeat must be set lower than the session timeout
   	at org.apache.kafka.clients.consumer.internals.Heartbeat.<init>(Heartbeat.java:35)
   	at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.<init>(AbstractCoordinator.java:135)
   	at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.<init>(ConsumerCoordinator.java:108)
   	at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:676)
   	... 4 more
   ```
   
   #### Steps to reproduce
   
   1. Prepare a kafka yaml file and make sure `sessionTimeoutMs` to be less than 10s.
   
   ```
   configs:
       bootstrapServers: "127.0.0.1:9092"
       groupId: "pulsarUTset"
       topic: "test_kafka_topic"
       fetchMinBytes: 1
       autoCommitEnabled: "true"
       autoCommitIntervalMs: 1000
       sessionTimeoutMs: 3000
   ```
   
   2. Start pulsar standalone
   
   3. Localrun a Kafka source connector
   
   ```
   bin/pulsar-admin source localrun --source-config-file kafka.yaml -t kafka --destination-topic-name dest_topic --name kafka_fn
   ```
   
   #### System configuration
   **Pulsar version**:  any released version and master
   

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