It's explained in the JavaDocs: https://kafka.apache.org/0102/javadoc/index.html?org/apache/kafka/clients/consumer/KafkaConsumer.html
Also here: http://docs.confluent.io/current/clients/consumer.html If you have any more up question, just follow up :) -Matthias On 3/30/17 9:07 PM, kant kodali wrote: > Hi, > > Thanks Can you explain little bit whats happening underneath? Does Kafka > creates different group.id's by default when group.id's are not set ? When > specified a group only one consumer can consumer from the group the for a > particular partition right? > > Thanks! > > On Thu, Mar 30, 2017 at 9:00 PM, Matthias J. Sax <matth...@confluent.io> > wrote: > >> Yes, you can do that. >> >> -Matthias >> >> >> >> On 3/30/17 6:09 PM, kant kodali wrote: >>> Hi All, >>> >>> Can multiple Kafka consumers read from the same partition of same topic >> by >>> default? By default, I mean since group.id is not mandatory I am >> wondering >>> if I spawn multiple kafka consumers without specifying any group.id and >>> give them the same topic and partition name will they be able to read >> from >>> the same partition? I understand that If I give different group names for >>> each Kafka consumer then all the consumers can read from the same >> partition. >>> >>> Thanks! >>> >> >> >
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