Kafka Consumer hanging at .hasNext in java

Question

I have a simple Kafka Consumer in java with the following code

    public void run() {
        ConsumerIterator it = m_stream.iterator(         


        

Answer 1

The method hasNext() is blocking.

you can change the timeout of the blocking in the propertyconsumer.timeout.ms

Note that it will throw a TimeoutException when the timeout will expire.

Would read these docs about the consumers: https://cwiki.apache.org/confluence/display/KAFKA/Consumer+Group+Example https://cwiki.apache.org/confluence/display/KAFKA/0.8.0+SimpleConsumer+Example

Answer 2

The solution was to add the property

"consumer.timeout.ms"

Now when the timeout is reached a ConsumerTimeoutException is thrown