[jira] [Created] (KAFKA-3854) Consecutive regex subscription calls fail

["Vahid Hashemian (JIRA)" <ji...@apache.org>]

Vahid Hashemian created KAFKA-3854:
--------------------------------------

             Summary: Consecutive regex subscription calls fail
                 Key: KAFKA-3854
                 URL: https://issues.apache.org/jira/browse/KAFKA-3854
             Project: Kafka
          Issue Type: Bug
          Components: consumer
            Reporter: Vahid Hashemian
            Assignee: Vahid Hashemian


When consecutive calls are made to new consumer's [regex subscription|https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/KafkaConsumer.java#L850], like below: 

{code}
consumer.subscribe(Pattern.compile("..."), listener);
consumer.poll(0);

consumer.subscribe(Pattern.compile("f.."), listener);
consumer.poll(0);
{code}

the second call fails with the following error:

{code}
Exception in thread "main" java.lang.IllegalStateException: Subscription to topics, partitions and pattern are mutually exclusive
	at org.apache.kafka.clients.consumer.internals.SubscriptionState.subscribe(SubscriptionState.java:175)
	at org.apache.kafka.clients.consumer.KafkaConsumer.subscribe(KafkaConsumer.java:854)
	at ConsumerSubscriptionSemantics.tryRegexSubscriptionSemantics(ConsumerSubscriptionSemantics.java:76)
	at ConsumerSubscriptionSemantics.main(ConsumerSubscriptionSemantics.java:88)
{code}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)