All,

Just to clarify (as my previous message didn't mention this):

During test 2 messages get lost in transit once the broker is shutdown
and despite the very low volume of messages 5 messages per second over
25 seconds.

Cheers

On Fri, Sep 25, 2015 at 11:49 PM, Andre <[email protected]> wrote:
> Hi there,
>
> Is anyone able to confirm what is the expected behaviour of using the
> Kafka output in case of an unlikely multi-broker outage?
>
> I have been doing some tests against my pipeline (heka TcpInput ->
> KafkaOutput  -> Broker) all running on the same machine and I noticed
> the following behavior:
>
> Test 1 - Broker is dead when heka starts:
>
> Error making runner for TestKafkaOutput: Initialization failed for
> 'TestKafkaOutput': kafka: client has run out of available brokers to
> talk to (Is your cluster reachable?)
>
>
> Test 2 - All brokers (1 in this case) go offline (healthy shutdown)
> during message streaming
>
>
> 2015/09/25 23:12:12 Plugin 'TestKafkaOutput' error: kafka error
> 'kafka: client has run out of available brokers to talk to (Is your
> cluster reachable?)' for message '<38>2015-09-25T22:39:36 localhost
> localprg[1234]: seq: 0000670524, runid: 1443184763,
> '
> 2015/09/25 23:12:13 Plugin 'TestKafkaOutput' error: kafka error
> 'kafka: client has run out of available brokers to talk to (Is your
> cluster reachable?)' for message '<38>2015-09-25T22:39:36 localhost
> localprg[1234]: seq: 0000670525, runid: 1443184763,
> '
> 2015/09/25 23:12:14 Plugin 'TestKafkaOutput' error: kafka error
> 'kafka: client has run out of available brokers to talk to (Is your
> cluster reachable?)' for message '<38>2015-09-25T22:39:36 localhost
> localprg[1234]: seq: 0000670526, runid: 1443184763
> '
> 2015/09/25 23:12:14 Plugin 'TestKafkaOutput' error: kafka error
> 'circuit breaker is open' for message '<38>2015-09-25T22:39:36
> localhost localprg[1234]: seq: 0000670527, runid: 1443184763
>
>
> I was surprised by this one. After reading the documentation I would
> assume that required_acks default WaitForLocal would prevent this from
> happening?
>
> Relevant TOML section is:
>
> [TestKafkaOutput]
> type = "KafkaOutput"
> message_matcher = "Type == 'TcpInput'"
> topic = "test_topic"
> addrs = ["localhost:9092"]
> encoder = "PayloadEncoder"
>
>
>
>
> I thank you in advance
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