+1 on getting rid of quotes in jmx mbeans. Thanks, Raja.
On Fri, Oct 17, 2014 at 4:48 PM, Neha Narkhede <neha.narkh...@gmail.com> wrote: > +1 on getting rid of the quotes. > > On Fri, Oct 17, 2014 at 12:31 PM, Magnus Spångdal < > magnus.spang...@deltaprojects.com> wrote: > > > +1 to get rid of quotes, thanks! > > > > > > > > > > > > > > — > > Sent from Mailbox > > > > On Fri, Oct 17, 2014 at 8:54 PM, Jun Rao <jun...@gmail.com> wrote: > > > > > Hi, everyone, > > > We are fixing the mbean names in kafka-1482, by adding separate > explicit > > > tags in the name for things like clientId and topic. Another thing that > > > some people have complained before is that we use quotes in the jmx > name. > > > Should we also just get rid of the quotes as part of kafka-1482? So, > > > instead of > > > > "kafka.server":type="BrokerTopicMetrics",name="topic-1-BytesInPerSec" > > > we will have > > > > kafka.server:type=BrokerTopicMetrics,name=BytesInPerSec,topic=topic-1 > > > Thanks, > > > Jun > > > On Thu, Oct 9, 2014 at 11:12 AM, Neha Narkhede < > neha.narkh...@gmail.com> > > > wrote: > > >> I am going to vote for 1482 to be included in 0.8.2, if we have a > patch > > >> submitted in a week. I think we've had this JIRA opened for too long > > and we > > >> held people back so it's only fair to release this. > > >> > > >> On Wed, Oct 8, 2014 at 9:40 PM, Jun Rao <jun...@gmail.com> wrote: > > >> > > >> > Otis, > > >> > > > >> > Just have the patch ready asap. We can make a call then. > > >> > > > >> > Thanks, > > >> > > > >> > Jun > > >> > > > >> > On Wed, Oct 8, 2014 at 6:13 AM, Otis Gospodnetic < > > >> > otis.gospodne...@gmail.com > > >> > > wrote: > > >> > > > >> > > Hi Jun, > > >> > > > > >> > > Would by the end of next week be acceptable for 0.8.2? > > >> > > > > >> > > Thanks, > > >> > > Otis > > >> > > -- > > >> > > Monitoring * Alerting * Anomaly Detection * Centralized Log > > Management > > >> > > Solr & Elasticsearch Support * http://sematext.com/ > > >> > > > > >> > > > > >> > > On Tue, Oct 7, 2014 at 4:04 PM, Jun Rao <jun...@gmail.com> wrote: > > >> > > > > >> > > > Otis, > > >> > > > > > >> > > > Yes, if you guys can help provide a patch in a few days, we can > > >> > probably > > >> > > > get it to the 0.8.2 release. > > >> > > > > > >> > > > Thanks, > > >> > > > > > >> > > > Jun > > >> > > > > > >> > > > On Tue, Oct 7, 2014 at 12:10 PM, Otis Gospodnetic < > > >> > > > otis.gospodne...@gmail.com> wrote: > > >> > > > > > >> > > > > Hi Jun, > > >> > > > > > > >> > > > > I think your MBean renaming approach will work. I see > > >> > > > > https://issues.apache.org/jira/browse/KAFKA-1481 has Fix > > Version > > >> > > 0.8.2, > > >> > > > > but > > >> > > > > is not marked as a Blocker. We'd love to get the MBeans fixed > > so > > >> > this > > >> > > > > makes it in 0.8.2 release. Do you know if this is on anyone's > > >> plate > > >> > > (the > > >> > > > > issue is currently Unassigned)? If not, should we provide a > new > > >> > patch > > >> > > > that > > >> > > > > uses your approach? > > >> > > > > > > >> > > > > Thanks, > > >> > > > > Otis > > >> > > > > -- > > >> > > > > Monitoring * Alerting * Anomaly Detection * Centralized Log > > >> > Management > > >> > > > > Solr & Elasticsearch Support * http://sematext.com/ > > >> > > > > > > >> > > > > > > >> > > > > On Thu, Sep 18, 2014 at 4:49 PM, Jun Rao <jun...@gmail.com> > > wrote: > > >> > > > > > > >> > > > > > Otis, > > >> > > > > > > > >> > > > > > In kafka-1481, we will have to change the mbean names (at > > least > > >> the > > >> > > > ones > > >> > > > > > with clientid and topic) anyway. Using the name/value pair > in > > the > > >> > > mbean > > >> > > > > > name allows us to do this in a cleaner way. Yes, "," is not > > >> allowed > > >> > > in > > >> > > > > > clientid or topic. > > >> > > > > > > > >> > > > > > Bhavesh, > > >> > > > > > > > >> > > > > > Yes, I was thinking of making changes in the new metrics > > package. > > >> > > > > Something > > >> > > > > > like allowing the sensor names to have name/value pairs. The > > jmx > > >> > > names > > >> > > > > will > > >> > > > > > just follow accordingly. This is probably cleaner than doing > > the > > >> > > > > escaping. > > >> > > > > > Also, the metric names are more intuitive (otherwise, you > > have to > > >> > > know > > >> > > > > > which part is the clientid and which part is the topic). > > >> > > > > > > > >> > > > > > Thanks, > > >> > > > > > > > >> > > > > > Jun > > >> > > > > > > > >> > > > > > On Wed, Sep 17, 2014 at 2:32 PM, Otis Gospodnetic < > > >> > > > > > otis.gospodne...@gmail.com> wrote: > > >> > > > > > > > >> > > > > > > Hi Jun, > > >> > > > > > > > > >> > > > > > > On Wed, Sep 17, 2014 at 12:35 PM, Jun Rao < > jun...@gmail.com > > > > > >> > > wrote: > > >> > > > > > > > > >> > > > > > > > Bhavesh, > > >> > > > > > > > > > >> > > > > > > > Yes, allowing dot in clientId and topic makes it a bit > > harder > > >> > to > > >> > > > > define > > >> > > > > > > the > > >> > > > > > > > JMX bean names. I see a couple of solutions here. > > >> > > > > > > > > > >> > > > > > > > 1. Disable dot in clientId and topic names. The issue is > > that > > >> > dot > > >> > > > may > > >> > > > > > > > already be used in existing deployment. > > >> > > > > > > > > > >> > > > > > > > 2. We can represent the JMX bean name differently in the > > new > > >> > > > > producer. > > >> > > > > > > > Instead of > > >> > > > > > > > kafka.producer.myclientid:type=mytopic > > >> > > > > > > > we could change it to > > >> > > > > > > > kafka.producer:clientId=myclientid,topic=mytopic > > >> > > > > > > > > > >> > > > > > > > I felt that option 2 is probably better since it doesn't > > >> affect > > >> > > > > > existing > > >> > > > > > > > users. > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > If it doesn't affect existing users, great. > > >> > > > > > > > > >> > > > > > > If you are saying that each "piece" of MBean name could be > > >> > > expressed > > >> > > > as > > >> > > > > > > name=value pair, with something like "," (forbidden in > host > > >> > names, > > >> > > > > topic > > >> > > > > > > names, client IDs, etc. I assume?) then yes, I think this > > would > > >> > be > > >> > > > > easier > > >> > > > > > > to parse and it would be easier for people to understand > > what > > >> is > > >> > > > what. > > >> > > > > > > > > >> > > > > > > Otis > > >> > > > > > > -- > > >> > > > > > > Monitoring * Alerting * Anomaly Detection * Centralized > Log > > >> > > > Management > > >> > > > > > > Solr & Elasticsearch Support * http://sematext.com/ > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > > >> > > > > > > > Otis, > > >> > > > > > > > > > >> > > > > > > > We probably can also use option 2 to address KAFKA-1481. > > For > > >> > > > > > > topic/clientid > > >> > > > > > > > specific metrics, we could explicitly specify the metric > > name > > >> > so > > >> > > > that > > >> > > > > > it > > >> > > > > > > > contains "topic=mytopic,clientid=myclientid". That seems > > to > > >> be > > >> > a > > >> > > > much > > >> > > > > > > > cleaner way than having all parts included in a single > > string > > >> > > > > separated > > >> > > > > > > by > > >> > > > > > > > '|'. > > >> > > > > > > > > > >> > > > > > > > Thanks, > > >> > > > > > > > > > >> > > > > > > > Jun > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > On Tue, Sep 16, 2014 at 5:15 PM, Bhavesh Mistry < > > >> > > > > > > > mistry.p.bhav...@gmail.com> > > >> > > > > > > > wrote: > > >> > > > > > > > > > >> > > > > > > > > HI Otis, > > >> > > > > > > > > > > >> > > > > > > > > What is migration path ? If topic with special chars > > >> exists > > >> > > > > already( > > >> > > > > > > > > ".","-","|" etc) in previous version of > > producer/consumer > > >> of > > >> > > > > Kafka, > > >> > > > > > > what > > >> > > > > > > > > happens after the upgrade new producer or consumer > > (kafka > > >> > > > version) > > >> > > > > ? > > >> > > > > > > > Also, > > >> > > > > > > > > in new producer API (Kafka Trunk), does this enforce > the > > >> rule > > >> > > > about > > >> > > > > > > > client > > >> > > > > > > > > id as well ? > > >> > > > > > > > > > > >> > > > > > > > > Thanks, > > >> > > > > > > > > > > >> > > > > > > > > Bhavesh > > >> > > > > > > > > > > >> > > > > > > > > On Tue, Sep 16, 2014 at 2:09 PM, Otis Gospodnetic < > > >> > > > > > > > > otis.gospodne...@gmail.com> wrote: > > >> > > > > > > > > > > >> > > > > > > > > > Hi, > > >> > > > > > > > > > > > >> > > > > > > > > > So maybe I should I should have asked the Q > > explicitly: > > >> > > > > > > > > > Could we commit the patch from > > >> > > > > > > > > > https://issues.apache.org/jira/browse/KAFKA-1481 > now > > >> > that, I > > >> > > > > hope, > > >> > > > > > > > it's > > >> > > > > > > > > > clear what problems the current MBean names can > cause? > > >> > > > > > > > > > > > >> > > > > > > > > > Thanks, > > >> > > > > > > > > > Otis > > >> > > > > > > > > > -- > > >> > > > > > > > > > Monitoring * Alerting * Anomaly Detection * > > Centralized > > >> Log > > >> > > > > > > Management > > >> > > > > > > > > > Solr & Elasticsearch Support * http://sematext.com/ > > >> > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > > > On Mon, Sep 15, 2014 at 10:40 PM, Otis Gospodnetic < > > >> > > > > > > > > > otis.gospodne...@gmail.com> wrote: > > >> > > > > > > > > > > > >> > > > > > > > > > > Hi, > > >> > > > > > > > > > > > > >> > > > > > > > > > > *Problem:* > > >> > > > > > > > > > > Some Kafka 0.8.x MBeans have names composed of > > things > > >> > like > > >> > > > > > > <consumer > > >> > > > > > > > > > > group>-<topic>-<metric name>. Note how dashes are > > used > > >> > as > > >> > > > > > > > delimiters. > > >> > > > > > > > > > > When <consumer group> and <topic> don't contain > the > > >> > > > delimiter > > >> > > > > > > > > character > > >> > > > > > > > > > > all is good if you want to extract parts of this > > MBean > > >> > name > > >> > > > by > > >> > > > > > > simply > > >> > > > > > > > > > > splitting on the delimiter character. The problem > > is > > >> > that > > >> > > > > dashes > > >> > > > > > > are > > >> > > > > > > > > > > allowed in topic and group names, so this > splitting > > >> > doesn't > > >> > > > > work. > > >> > > > > > > > > > > Moreover, underscores are also used as delimiters, > > and > > >> > they > > >> > > > can > > >> > > > > > > also > > >> > > > > > > > be > > >> > > > > > > > > > > used in things like topic names. > > >> > > > > > > > > > > > > >> > > > > > > > > > > *Example*: > > >> > > > > > > > > > > This MBean's name is composed of <consumer > > >> > > > > > > > group>-<topic>-BytesPerSec: > > >> > > > > > > > > > > > > >> > > > > > > > > > > kafka.consumer:type="ConsumerTopicMetrics", > > >> > > > > > > > > name="*myGroup**-myTopic**-* > > >> > > > > > > > > > > BytesPerSec" > > >> > > > > > > > > > > > > >> > > > > > > > > > > Here we can actually split on "-" and extract all > 3 > > >> parts > > >> > > > from > > >> > > > > > the > > >> > > > > > > > > MBean > > >> > > > > > > > > > > name:: > > >> > > > > > > > > > > * consumer group ('*myGroup*') > > >> > > > > > > > > > > * topic ('*myTopic*') > > >> > > > > > > > > > > * metric (‘BytesPerSec’) > > >> > > > > > > > > > > > > >> > > > > > > > > > > All good! > > >> > > > > > > > > > > > > >> > > > > > > > > > > But imagine if I named the group: *my-Group* > > >> > > > > > > > > > > And if I named the topic: *my-Topic* > > >> > > > > > > > > > > > > >> > > > > > > > > > > Then we'd have: > > >> > > > > > > > > > > kafka.consumer:type="ConsumerTopicMetrics", > > >> > > > > > > > > > name="*my-Group**-my-Topic**-* > > >> > > > > > > > > > > BytesPerSec" > > >> > > > > > > > > > > > > >> > > > > > > > > > > Now splitting on "-" would no longer work! To > > extract > > >> > > > > "my-Group" > > >> > > > > > > and > > >> > > > > > > > > > > "my-Topic" and "BytesPerSec" parts I would have to > > know > > >> > the > > >> > > > > > > specific > > >> > > > > > > > > > group > > >> > > > > > > > > > > name and topic name to look for and could not use > > >> generic > > >> > > > > > approach > > >> > > > > > > of > > >> > > > > > > > > > just > > >> > > > > > > > > > > splitting the MBean name on the delimiter. > > >> > > > > > > > > > > > > >> > > > > > > > > > > *Solution*: > > >> > > > > > > > > > > The patch in > > >> > > > https://issues.apache.org/jira/browse/KAFKA-1481 > > >> > > > > > > > replaces > > >> > > > > > > > > > > all _ and - characters where they are used as > > >> delimiters > > >> > in > > >> > > > > MBean > > >> > > > > > > > names > > >> > > > > > > > > > > with a "|" character. Because the "I" character > is > > not > > >> > > > allowed > > >> > > > > > in > > >> > > > > > > > > topic > > >> > > > > > > > > > > names, consumer groups, host names, splitting on > > this > > >> new > > >> > > and > > >> > > > > > > unified > > >> > > > > > > > > > > delimiter works. > > >> > > > > > > > > > > > > >> > > > > > > > > > > I hope this explains the problem, the solution, > and > > >> that > > >> > > this > > >> > > > > can > > >> > > > > > > > make > > >> > > > > > > > > it > > >> > > > > > > > > > > in the next 0.8.x. > > >> > > > > > > > > > > > > >> > > > > > > > > > > Otis > > >> > > > > > > > > > > -- > > >> > > > > > > > > > > Monitoring * Alerting * Anomaly Detection * > > Centralized > > >> > Log > > >> > > > > > > > Management > > >> > > > > > > > > > > Solr & Elasticsearch Support * > http://sematext.com/ > > >> > > > > > > > > > > > > >> > > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > > -- Thanks, Raja.
