Hi, I am seeing behaviour which I am not expecting when using topic filters.
TopicFilter sourceTopicFilter = new Whitelist("pageviews");
List<KafkaStream<Message>> streams =
consumer.createMessageStreamsByFilter(sourceTopicFilter, 3);
The topic has exactly 3 partitions and 3 streams are created, however only
the last one gets messages, the first two become stale.
I am not sure if the singe stream contains messages from all partitions or
When I however use the following code I get all 3 streams consuming for
each respective partition.
Map<String, List<KafkaStream<Message>>> topicStreams =
consumer.createMessageStreams(
new HashMap<String, Integer>() {{
put("pageviews", 3);
}}
);
List<KafkaStream<Message>> streams = topicStreams.get("pageviews");
Am I missing something, is this expected ?
--
Michal Haris
Software Engineer
www.visualdna.com | t: +44 (0) 207 734 7033
