where does kafka runs RAM or SSD ? My question how to delete message frm Kafka topics.
Is message expire is only way ? *Regards,* *Laxmi Narayan Patel* *MCA NIT Durgapur (2011-2014)* *Mob:- 9741292048,8345847473 * On Tue, Jan 3, 2017 at 12:46 PM, Kunal Gupta <kunal.gu...@cube26.com> wrote: > For your Question 1 No, Message will be read only once by anyone of the > consumer in a consumer group > > For your Question 2 Yes, Because each consumer group will read a message > exactly once. Kafka is meant for Guaranteed Message Processing > > There are three ways of Guaranteed Message Processing 1) Exactly once 2) At > least Once 3) At most once > you can get information well in google. > > If you set auto commit true then message will not be deleted, it all deals > with consumer offset for reading a topic. At which offset consumer group > has read the topic. > > *Thanks, Kunal* > *+91-9958189589* > *Data Analyst* > *First Paper Publication : **http://dl.acm.org/citation.cfm?id=2790798 > <http://dl.acm.org/citation.cfm?id=2790798> * > *Second Paper Publication : http://dl.acm.org/citation.cfm?id=2947432 > <http://dl.acm.org/citation.cfm?id=2947432>* > *Blog:- **http://learnhardwithkunalgupta.blogspot.in > <http://learnhardwithkunalgupta.blogspot.in> * > > > > > > On Tue, Jan 3, 2017 at 12:41 PM, Laxmi Narayan NIT DGP < > nit.dgp...@gmail.com > > wrote: > > > Hi , > > > > If I have kafka cluster along with replication . > > > > Say cluster of 3 kafka-server and replication factor of message with 2. > > > > Que 1: > > > > I have 1-consumer group but 2 consumer in one group reading from 1-Topic, > > > > If I enable auto commit true in consumer , will same message will be read > > twice ? > > > > Que2: > > > > If I have 2 consumer group reading from 1-Topic > > > > If I enable auto commit true in consumer , will same message will be read > > twice ? > > > > > > and If I set auto-commit true will message will be deleted ? > > > > > > > > > > > > > > *Regards,* > > *Laxmi Narayan Patel* > > *MCA NIT Durgapur (2011-2014)* > > *Mob:- 9741292048,8345847473 * > > > > On Tue, Jan 3, 2017 at 12:34 PM, Kunal Gupta <kunal.gu...@cube26.com> > > wrote: > > > > > I don't think so because more partition can led to unavailability but > yes > > > can led to higher throughput. But it cause more problems like > increasing > > > end to end latency, requires more open file handler and require more > > memory > > > at client side. > > > > > > *Thanks, Kunal* > > > *+91-9958189589* > > > *Data Analyst* > > > *First Paper Publication : **http://dl.acm.org/citation.cfm?id=2790798 > > > <http://dl.acm.org/citation.cfm?id=2790798> * > > > *Second Paper Publication : http://dl.acm.org/citation.cfm?id=2947432 > > > <http://dl.acm.org/citation.cfm?id=2947432>* > > > *Blog:- **http://learnhardwithkunalgupta.blogspot.in > > > <http://learnhardwithkunalgupta.blogspot.in> * > > > > > > > > > > > > > > > > > > On Tue, Jan 3, 2017 at 12:25 PM, Laxmi Narayan NIT DGP < > > > nit.dgp...@gmail.com > > > > wrote: > > > > > > > Hi, > > > > > > > > Does adding more partitions to kafka will help in scaling ? > > > > > > > > > > > > *Regards,* > > > > *Laxmi Narayan Patel* > > > > *MCA NIT Durgapur (2011-2014)* > > > > *Mob:- 9741292048,8345847473 * > > > > > > > > > >
