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Posted to jira@kafka.apache.org by "Sönke Liebau (Jira)" <ji...@apache.org> on 2020/03/19 09:51:00 UTC
[jira] [Resolved] (KAFKA-1518) KafkaMetricsReporter prevents Kafka
from starting if the custom reporter throws an exception
[ https://issues.apache.org/jira/browse/KAFKA-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sönke Liebau resolved KAFKA-1518.
---------------------------------
Resolution: Not A Bug
Closed as this seems to be working as designed and long inactivity on ticket.
> KafkaMetricsReporter prevents Kafka from starting if the custom reporter throws an exception
> --------------------------------------------------------------------------------------------
>
> Key: KAFKA-1518
> URL: https://issues.apache.org/jira/browse/KAFKA-1518
> Project: Kafka
> Issue Type: Bug
> Components: tools
> Affects Versions: 0.8.1.1
> Reporter: Daniel Compton
> Priority: Major
>
> When Kafka starts up, it [starts|https://github.com/apache/kafka/blob/0.8.1/core/src/main/scala/kafka/metrics/KafkaMetricsReporter.scala#L60] custom metrics reporters. If any of these throw an exception on startup then this will block Kafka from starting.
> For example using [kafka-riemann-reporter|https://github.com/pingles/kafka-riemann-reporter], if Riemann is not available then it will throw an [IO Exception|https://github.com/pingles/kafka-riemann-reporter/issues/1] which isn't caught by KafkaMetricsReporter. This means that Kafka will fail to start until it can connect to Riemann, coupling a HA system to a non HA system.
> It would probably be better to log the error and perhaps have a callback hook to the reporter where they can handle it and startup in the background.
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