Khaireddine Rezgui reassigned KAFKA-6399:

    Assignee: Khaireddine Rezgui

> Consider reducing "max.poll.interval.ms" default for Kafka Streams
> ------------------------------------------------------------------
>                 Key: KAFKA-6399
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6399
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 1.0.0
>            Reporter: Matthias J. Sax
>            Assignee: Khaireddine Rezgui
>            Priority: Minor
> In Kafka {{}} we change the default value of 
> {{max.poll.intervall.ms}} for Kafka Streams to {{Integer.MAX_VALUE}}. The 
> reason was that long state restore phases during rebalance could yield 
> "rebalance storms" as consumers drop out of a consumer group even if they are 
> healthy as they didn't call {{poll()}} during state restore phase.
> In version {{0.11}} and {{1.0}} the state restore logic was improved a lot 
> and thus, now Kafka Streams does call {{poll()}} even during restore phase. 
> Therefore, we might consider setting a smaller timeout for 
> {{max.poll.intervall.ms}} to detect bad behaving Kafka Streams applications 
> (ie, targeting user code) that don't make progress any more during regular 
> operations.
> The open question would be, what a good default might be. Maybe the actual 
> consumer default of 30 seconds might be sufficient. During one {{poll()}} 
> roundtrip, we would only call {{restoreConsumer.poll()}} once and restore a 
> single batch of records. This should take way less time than 30 seconds.

This message was sent by Atlassian JIRA

Reply via email to