Praveen Devarao created KAFKA-3044: -------------------------------------- Summary: Consumer.poll doesnot return messages when poll interval is less Key: KAFKA-3044 URL: https://issues.apache.org/jira/browse/KAFKA-3044 Project: Kafka Issue Type: Bug Components: clients Affects Versions: 0.9.0.0 Reporter: Praveen Devarao Fix For: 0.9.0.1
When seeking to particular position in consumer and starting poll with timeout param 0 the consumer does not come back with data though there is data published via a producer already. If the timeout is increased slowly in chunks of 100ms then at 700ms value the consumer returns back the record on first call to poll. Docs [http://kafka.apache.org/090/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.html#poll(long)] for poll reads if timeout is 0 then data will be returned immediately but the behaviour seen is that data is not returned. The test code I am using can be found here https://gist.github.com/praveend/013dcab01ebb8c7e2f2d I have created a topic with data published as below and then running the test program [ConsumerPollTest.java] $ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic mytopic $ bin/kafka-console-producer.sh --broker-list localhost:9092 --topic mytopic Hello Hai bye $ java ConsumerPollTest I have published this 3 lines of data to kafka only once....later on I just use the above program with different poll interval Let me know if I am missing anything and interpreting it wrongly. -- This message was sent by Atlassian JIRA (v6.3.4#6332)