Hey Steven,
That sounds like a bug. I think we fixed a few producer high cpu issues
since the beta, I wonder if you could repeat the same test with the 0.8.2.
final release?
-Jay
On Tue, Feb 3, 2015 at 8:37 PM, Steven Wu <stevenz...@gmail.com> wrote:
> actually, my local test can reproduce the issue although not immediately.
> seems to happen after a few mins. I enabled TRACE level logging. here seems
> to be the tight loop. you can see that there are two metadata requests in
> one milli-seconds.
>
> kafka-producer-network-thread | foo 20:34:32,626 TRACE NetworkClient:301 -
> Ignoring empty metadata response with correlation id 360185.
> kafka-producer-network-thread | foo 20:34:32,626 DEBUG NetworkClient:369 -
> Trying to send metadata request to node -2
> kafka-producer-network-thread | foo 20:34:32,626 DEBUG NetworkClient:374 -
> Sending metadata request ClientRequest(expectResponse=true, payload=null,
>
> request=RequestSend(header={api_key=3,api_version=0,correlation_id=360186,client_id=foo},
> body={topics=[]})) to node -2
> kafka-producer-network-thread | foo 20:34:32,626 TRACE NetworkClient:301 -
> Ignoring empty metadata response with correlation id 360186.
> kafka-producer-network-thread | foo 20:34:32,626 DEBUG NetworkClient:369 -
> Trying to send metadata request to node -2
>
>
> On Tue, Feb 3, 2015 at 8:10 PM, Steven Wu <stevenz...@gmail.com> wrote:
>
> > Hi,
> >
> > We have observed high cpu and high network traffic problem when
> > 1) cluster (0.8.1.1) has no topic
> > 2) KafkaProducer (0.8.2-beta) object is created without sending any
> traffic
> >
> > We have observed such problem twice. In both cases, problem went away
> > immediately after one/any topic is created.
> >
> > Is this a known issue? Just want to check with the community first before
> > I spend much time to reproduce it.
> >
> > I couldn't reproduce the issue with similar setup with unit test code in
> > IDE. start two brokers with no topic locally on my laptop. create a
> > KafkaProducer object without sending any msgs. but I only tested with
> > 0.8.2-beta for both broker and producer.
> >
> > Thanks,
> > Steven
> >
>
