If planing to support both, please make 0.9 version of getKafka not to depend on zookeeper, as 0.9 Kafka consumes can directly communicate with brokers without needing explicit firewall ports opened between NiFi and zookeeper Sumo
> On Feb 21, 2016, at 2:23 PM, Joe Witt <joe.w...@gmail.com> wrote: > > Yeah the intent is to support 0.8 and 0.9. Will figure something out. > > Thanks > Joe > >> On Feb 21, 2016 4:47 PM, "West, Joshua" <josh_w...@bose.com> wrote: >> Hi Oleg, >> >> Hmm -- from what I can tell, this isn't a Zookeeper communication issue. >> Nifi is able to connect into the Kafka brokers' Zookeeper cluster and >> retrieve the list of the kafka brokers to connect to. Seems, from the logs, >> to be a problem when attempting to consume from Kafka itself. >> >> I'm guessing that the Kafka 0.9.0 client libraries just are not compatible >> with Kafka 0.8.2.1 so in order to use Nifi 0.5.0 with Kafka, the Kafka >> version must be >= 0.9.0. >> >> Any change Nifi could add backwards compatible support for Kafka 0.8.2.1 >> too? Let you choose which client library version, when setting up the >> GetKafka processor? >> >> -- >> Josh West <josh_w...@bose.com> >> Bose Corporation >> >> >>> On Sun, 2016-02-21 at 15:02 +0000, Oleg Zhurakousky wrote: >>> Josh >>> >>> Also, keep in mind that there are incompatible property names in Kafka >>> between the 0.7 and 0.8 releases. One of the change that went it was >>> replacing “zk.connectiontimeout.ms” with “zookeeper.connection.timeout.ms”. >>> Not sure if it’s related though, but realizing that 0.4.1 was relying on >>> this property it’s value was completely ignored with 0.8 client libraries >>> (you could actually see the WARN message to that effect) and now it is not >>> ignored, so take a look and see if tinkering with its value changes >>> something. >>> >>> Cheers >>> Oleg >>>> On Feb 20, 2016, at 6:47 PM, Oleg Zhurakousky >>>> <ozhurakou...@hortonworks.com> wrote: >>>> >>>> Josh >>>> >>>> The only change that ’s went and relevant to your issue is the fact that >>>> we’ve upgraded client libraries to Kafka 0.9 and between 0.8 and 0.9 Kafka >>>> introduced wire protocol changes that break compatibility. >>>> I am still digging so stay tuned. >>>> >>>> Oleg >>>> >>>>> On Feb 20, 2016, at 4:10 PM, West, Joshua <josh_w...@bose.com> wrote: >>>>> >>>>> Hi Oleg and Joe, >>>>> >>>>> Kafka 0.8.2.1 >>>>> >>>>> Attached is the app log with hostnames scrubbed. >>>>> >>>>> Thanks for your help. Much appreciated. >>>>> >>>>> -- >>>>> Josh West <josh_w...@bose.com> >>>>> Bose Corporation >>>>> >>>>> >>>>>> On Sat, 2016-02-20 at 15:46 -0500, Joe Witt wrote: >>>>>> And also what version of Kafka are you using? >>>>>> >>>>>>> On Feb 20, 2016 3:37 PM, "Oleg Zhurakousky" >>>>>>> <ozhurakou...@hortonworks.com> wrote: >>>>>>> Josh >>>>>>> >>>>>>> Any chance to attache the app-log or relevant stack trace? >>>>>>> >>>>>>> Thanks >>>>>>> Oleg >>>>>>> >>>>>>>> On Feb 20, 2016, at 3:30 PM, West, Joshua <josh_w...@bose.com> wrote: >>>>>>>> >>>>>>>> Hi folks, >>>>>>>> >>>>>>>> I've upgraded from Nifi 0.4.1 to 0.5.0 and I am no longer able to use >>>>>>>> the GetKafka processor. I'm seeing errors like so: >>>>>>>> >>>>>>>> 2016-02-20 20:10:14,953 WARN >>>>>>>> [ConsumerFetcherThread-NiFi-sldjflkdsjflksjf_**SCRUBBED**-1455999008728-5b8c7108-0-0] >>>>>>>> kafka.consumer.ConsumerFetcherThread >>>>>>>> [ConsumerFetcherThread-NiFi-sldjflkdsjflksjf_**SCRUBBED**-1455999008728-5b8c7108-0-0], >>>>>>>> Error in >>>>>>>> fetchkafka.consumer.ConsumerFetcherThread$FetchRequest@7b49a642. >>>>>>>> Possible cause: java.lang.IllegalArgumentException >>>>>>>> >>>>>>>> ^ Note the hostname of the server has been scrubbed. >>>>>>>> >>>>>>>> My configuration is pretty generic, except that with Zookeeper we use >>>>>>>> a different root path, so our Zookeeper connect string looks like so: >>>>>>>> >>>>>>>> zookeeper-node1:2181,zookeeper-node2:2181,zookeeper-node3:2181/kafka >>>>>>>> >>>>>>>> Is anybody else experiencing issues? >>>>>>>> >>>>>>>> Thanks. >>>>>>>> >>>>>>>> -- >>>>>>>> Josh West <josh_w...@bose.com> >>>>>>>> Cloud Architect >>>>>>>> Bose Corporation >>>>>>>> >>>>> <nifi-app.log.kafkaissues.bz2>
