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Posted to jira@kafka.apache.org by "Bill Bejeck (JIRA)" <ji...@apache.org> on 2017/12/11 14:20:00 UTC
[jira] [Assigned] (KAFKA-5784) Add a sensor for dropped records in
window stores
[ https://issues.apache.org/jira/browse/KAFKA-5784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bill Bejeck reassigned KAFKA-5784:
----------------------------------
Assignee: (was: Bill Bejeck)
> Add a sensor for dropped records in window stores
> -------------------------------------------------
>
> Key: KAFKA-5784
> URL: https://issues.apache.org/jira/browse/KAFKA-5784
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Guozhang Wang
> Labels: newbie
>
> Today when a {{put(record)}} call on a windowed store does not find the corresponding segment, i.e. its corresponding's window has expired, we simply returns a {{null}} and hence silently drops it.
> We should consider 1) add log4j entries when it happens, 2) add metrics (we can discuss whether it should be a processor-node level, or store level sensor) for such cases.
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