Michael, I should have added if your using Burrow in the context of samza consumers it probably won't work because samza does it's own offset tracking (see checkpoint topics). The messages-behind-high-watermark is probably your best bet if you just want something out of the box and don't care about lag time only message count behind. -Jordan
On Mon, Nov 16, 2015 at 11:40 AM, Michael Ravits <michaelr...@gmail.com> wrote: > Thanks Jagadish! I'll look further into this. > > Jordan, I tested Burrow with 0.8.3-SNAPSHOT and set it to read consumer > offsets from zookeeper because I assumed that it's the default Kafka config > for commiting offsets. Will try again with Burrow set to read from > __consumer_offsets. > > Thanks > > On Mon, Nov 16, 2015 at 8:04 PM, Jordan Shaw <jor...@pubnub.com> wrote: > > > Michael, > > It depends on how you define lag. > > > > 1) If you define lag as the total number of messages behind then burrow > is > > a good tool as long as all your infrastructure is on 0.8.2, it basically > > works by inspecting the __consumer_offsets topic which was introduced in > > 0.8.2 (they said they were going to support <0.8.2 but i don't think > that's > > a thing yet). > > > > 2. If you define lag in time units I would recommend sending a timestamp > > with the msg and doing some "manual" inspecting on the consumer end. > > -Jordan > > > > On Mon, Nov 16, 2015 at 9:16 AM, Michael Ravits <michaelr...@gmail.com> > > wrote: > > > > > Hi, > > > > > > I'd like to monitor consumer's lag. > > > Found this tool https://github.com/linkedin/Burrow. > > > But now realized that Samza is using it's own checkpointing mechanism. > > > > > > So question is what's the best way to monitor whether and how much the > > > consumer is lagging? > > > > > > On a related subject, I'd also like to monitor throughput per topic in > > > terms of messages per second and bytes per second. Should I query > brokers > > > periodically, or maybe there is a better way? > > > > > > Thanks, > > > Michael > > > > > > > > > > > -- > > Jordan Shaw > > Full Stack Software Engineer > > PubNub Inc > > 1045 17th St > > San Francisco, CA 94107 > > > -- Jordan Shaw Full Stack Software Engineer PubNub Inc 1045 17th St San Francisco, CA 94107
