Re: How to read from a Kafka topic from the beginning

2017-01-18 Thread Tzu-Li (Gordon) Tai
Hi, Yes, Flink does not rely on consumer offset commits in Kafka / Zookeeper. It manages offsets as checkpointed state with Flink, and uses those offsets for exactly-once. Currently the “auto.offset.reset” is passed into the internally used KafkaConsumer as a means to define start position, but

Re: How to read from a Kafka topic from the beginning

2017-01-16 Thread Matthias J. Sax
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 I would put this differently: "auto.offset.reset" policy is only used, if there are no valid committed offsets for a topic. See here: http://stackoverflow.com/documentation/apache-kafka/5449/consumer-groups - -and-offset-management (don't be confus

Re: How to read from a Kafka topic from the beginning

2017-01-16 Thread Jonas
You also need to have a new for this to work. -- View this message in context: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/How-to-read-from-a-Kafka-topic-from-the-beginning-tp3522p11087.html Sent from the Apache Flink User Mailing List archive. mailing list archive at

Re: How to read from a Kafka topic from the beginning

2015-11-17 Thread Robert Metzger
Hi Will, In Kafka's consumer configuration [1] there is a configuration parameter called "auto.offset.reset". Setting it to "smallest" will tell the consumer to start reading a topic from the smallest available offset. You can pass the configuration using the properties of the Kafka consumer. [

How to read from a Kafka topic from the beginning

2015-11-17 Thread Miaoyongqiang (Will)
Hi, How can I tell a "FlinkKafkaConsumer" that I want to read from a topic from the beginning? Thanks, Will