Hello Han, 1. As Marko mentioned you can use "seek" in the 0.9 Java consumer to reset your consuming offsets. Or if you are stopping the consumer between your test runs you can also commit() with offset 0 before you closing your consumer at the end of each test.
2. In the 0.9 Java consumer both the consumer registry information and the offsets are stored in Kafka servers instead of on the ZK, you can find a more detailed description and motivation of this change here: https://cwiki.apache.org/confluence/display/KAFKA/Consumer+Client+Re-Design So the "AdminUtils.deleteConsumerGroupInZK" will not help in removing the consumer registry information. 3. We have deprecated kafka.tools.ConsumerOffsetChecker in 0.9, see "deprecations in 0.9.0" here: http://kafka.apache.org/documentation.html#upgrade_9_breaking Instead you can try to use bin/kafka-consumer-groups.sh (kafka.admin.ConsumerGroupCommand). Guozhang On Wed, Dec 30, 2015 at 9:10 AM, Han JU <ju.han.fe...@gmail.com> wrote: > Hi Marko, > > Yes we're currently using this on our production kafka 0.8. But it does not > seem to work with the new consumer API in 0.9. > To answer my own question about deleting consumer group in new consumer > API, it seems that it's currently not possible with the new consumer API > (there's no delete related method in `AdminClient` of the new consumer > API). > > > 2015-12-30 17:02 GMT+01:00 Marko Bonaći <marko.bon...@sematext.com>: > > > If you want to monitor offset (ZK or Kafka based), try with QuantFind's > > Kafka Offset Monitor. > > If you use Docker, it's easy as: > > > > docker run -p 8080:8080 -e ZK=zk_hostname:2181 > > jpodeszwik/kafka-offset-monitor > > and then opening browser to dockerhost:8080. > > > > If not in the Docker mood, use instructions here: > > https://github.com/quantifind/KafkaOffsetMonitor > > > > Marko Bonaći > > Monitoring | Alerting | Anomaly Detection | Centralized Log Management > > Solr & Elasticsearch Support > > Sematext <http://sematext.com/> | Contact > > <http://sematext.com/about/contact.html> > > > > On Wed, Dec 30, 2015 at 12:54 PM, Han JU <ju.han.fe...@gmail.com> wrote: > > > > > Thanks guys. The `seek` seems a solution. But it's more cumbersome than > > in > > > 0.8 because I have to plug in some extra code in my consumer > abstractions > > > rather than simply deleting a zk node. > > > And one more question: where does kafka 0.9 stores the consumer-group > > > information? In fact I also tried to delete the consumer group but the > > > `AdminUtils.deleteConsumerGroupInZK` does not seem to work in 0.9. And > > also > > > `bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --zookeeper > > > localhost:2181 --group group-name` seems broken. > > > > > > Thanks! > > > > > > 2015-12-29 16:46 GMT+01:00 Marko Bonaći <marko.bon...@sematext.com>: > > > > > > > I was refering to Dana Powers's answer in the link I posted (to use a > > > > client API). You can find an example here: > > > > > > > > > > > > > > http://kafka.apache.org/090/javadoc/org/apache/kafka/clients/consumer/KafkaConsumer.html > > > > > > > > Marko Bonaći > > > > Monitoring | Alerting | Anomaly Detection | Centralized Log > Management > > > > Solr & Elasticsearch Support > > > > Sematext <http://sematext.com/> | Contact > > > > <http://sematext.com/about/contact.html> > > > > > > > > On Tue, Dec 29, 2015 at 4:41 PM, Stevo Slavić <ssla...@gmail.com> > > wrote: > > > > > > > > > Then I guess @Before test, explicitly commit offset of 0. > > > > > > > > > > There doesn't seem to be a tool for committing offset, only for > > > > > checking/fetching current offset (see > > > > > http://kafka.apache.org/documentation.html#operations ) > > > > > > > > > > On Tue, Dec 29, 2015 at 4:35 PM, Han JU <ju.han.fe...@gmail.com> > > > wrote: > > > > > > > > > > > Hi Stevo, > > > > > > > > > > > > But by deleting and recreating the topic, do I remove also the > > > messages > > > > > > ingested? > > > > > > My use case is that I ingest prepared messages once and run > > consumer > > > > > tests > > > > > > multiple times, between each test run I reset the consumer > group's > > > > offset > > > > > > so that each run starts from the beginning and consumers all the > > > > > messages. > > > > > > > > > > > > 2015-12-29 16:19 GMT+01:00 Stevo Slavić <ssla...@gmail.com>: > > > > > > > > > > > > > Have you considered deleting and recreating topic used in test? > > > > > > > Once topic is clean, read/poll once - any committed offset > should > > > be > > > > > > > outside of the range, and consumer should reset offset. > > > > > > > > > > > > > > On Tue, Dec 29, 2015 at 4:11 PM, Han JU < > ju.han.fe...@gmail.com> > > > > > wrote: > > > > > > > > > > > > > > > Hello, > > > > > > > > > > > > > > > > For local test purpose I need to frequently reset offset for > a > > > > > consumer > > > > > > > > group. In 0.8 I just delete the consumer group's zk node > under > > > > > > > > `/consumers`. But with the redesign of the 0.9, how could I > > > achieve > > > > > the > > > > > > > > same thing? > > > > > > > > > > > > > > > > Thanks! > > > > > > > > > > > > > > > > -- > > > > > > > > *JU Han* > > > > > > > > > > > > > > > > Software Engineer @ Teads.tv > > > > > > > > > > > > > > > > +33 0619608888 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > *JU Han* > > > > > > > > > > > > Software Engineer @ Teads.tv > > > > > > > > > > > > +33 0619608888 > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > *JU Han* > > > > > > Software Engineer @ Teads.tv > > > > > > +33 0619608888 > > > > > > > > > -- > *JU Han* > > Software Engineer @ Teads.tv > > +33 0619608888 > -- -- Guozhang
