Thanks Jun.
On Tue, Oct 22, 2013 at 8:51 PM, Jun Rao <jun...@gmail.com> wrote: > When a broker goes down, we have an optimization in the controller that > proactively shrinks ISR. The ISR shrink rate only measures the rate that > the leader shrinks ISR and doesn't reflect the shrinking by the controller. > In general, having ISR shrink rate stay at 0 is a good thing since it means > that the followers can always keep up. > > Thanks, > > Jun > > > On Tue, Oct 22, 2013 at 12:55 AM, Monika Garg <gargmon...@gmail.com> > wrote: > > > Thanks a lot Jun. > > > > Now im getting the values in ISR expansion rate,whenever broker goes down > > and then up. > > > > But still ISR shrink rate is always having value 0. > > > > what I have done is: > > > > I made 3 node cluster.Than created 5 partitions with replica=3. > > partitions got distributed on 1,2,3 brokers with isr= 1,2,3, and replica > = > > 1,2,3 > > broker -3 is leader for 2 partitions. > > > > then i stopped one broker(say 3),then isr = 1,2 and replica = 1,2,3. > > In this case I waited for some time to get the ISR shrink value to get > > updated in my jconsole,but value remained 0 for all attributes of ISR > > shrink rate. > > > > Then I started broker(say 3) that i stopped earlier,what I saw is: > > > > ISR expansion rate has the values as: > > > > count -2 (on both other brokers 1,2) > > oneminuterate - 0.012 etc. > > > > then I again stopped broker-1,still isr shrink rate not getting any > > value.Can you please check? > > > > One more thing if you can please have a look: > > How the other attributes like FifteenMinuteRate,OneMinuteRate etc are > > continuosly changing for any Mbean. > > > > > > > > > > > > > > > > On Tue, Oct 22, 2013 at 9:00 AM, Jun Rao <jun...@gmail.com> wrote: > > > > > Updated the description in > > > http://kafka.apache.org/documentation.html#monitoring. Does that help > > make > > > things clearer? > > > > > > Thanks, > > > > > > Jun > > > > > > > > > On Mon, Oct 21, 2013 at 9:43 AM, Monika Garg <gargmon...@gmail.com> > > wrote: > > > > > > > Thanks for replying Neha.It helped me a lot in getting the things > more > > > > clear. > > > > I just have some doubts for the value of below Mbeans,please have a > > look: > > > > (1)ISR expansion > > > > rate::"kafka.server":name="ISRShrinksPerSec",type="ReplicaManager" > > > > ,non-zero only during broker startup. > > > > Does the property (1) mean that,it will be become zero when any > broker > > > (in > > > > a 2 node cluster)is started,and will be non-zero again if both the > > > brokers > > > > are stopped. > > > > (2)ISR shrink > > > > rate::"kafka.server":name="ISRShrinksPerSec",type="ReplicaManager" > > > > , 0 > > > > Will this property(2) be always be zero? > > > > Thanks. > > > > > > > > > > > > > > > > > > > > > > > > On Mon, Oct 21, 2013 at 8:35 PM, Neha Narkhede < > > neha.narkh...@gmail.com > > > > >wrote: > > > > > > > > > You may find this useful - > > > > > http://kafka.apache.org/documentation.html#monitoring > > > > > > > > > > Let us know how we can improve the documentation further. > > > > > > > > > > Thanks, > > > > > Neha > > > > > > > > > > > > > > > On Mon, Oct 21, 2013 at 5:42 AM, Monika Garg <gargmon...@gmail.com > > > > > > wrote: > > > > > > > > > > > Hi, > > > > > > > > > > > > I am getting so many Mbeans from My JMX like > > > kafka.server,kafka.network > > > > > > etc. > > > > > > > > > > > > There are of different types and have a lot of attributes. > > > > > > > > > > > > I am trying to get when the attribute value for any Mbean is > > getting > > > > > > changed. > > > > > > > > > > > > But no helpful docs I am getting for it on google. > > > > > > > > > > > > Even the terms used like > > > > > > > > kafka.server":type="FetchRequestPurgatory",name="PurgatorySize",here > > > > > > how/when the value of PurgatorySize get change.No clue for this. > > > > > > Similar to this there are a lot more values like > > > > > > > > > > > > when a topic is created,there is 554 values in kafka.network > Mbean. > > > > > > > > > > > > Please any one can share any doc that explains the Mbeans for > > > > Kafka-0.8. > > > > > > > > > > > > It will be really helpful for me. > > > > > > Thanks. > > > > > > > > > > > > -- > > > > > > *Moni* > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > *Moniii* > > > > > > > > > > > > > > > -- > > *Moniii* > > > -- *Moniii*
