[jira] [Updated] (SAMZA-2348) Notifying BEM about kafkaConsumerProxy failure via kafkaConsumer to prevent BEM poll blocking in case of proxy failures

["Hai Lu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SAMZA-2348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hai Lu updated SAMZA-2348:
--------------------------
    Fix Version/s: 1.3

> Notifying BEM about kafkaConsumerProxy failure via kafkaConsumer to prevent BEM poll blocking in case of proxy failures
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: SAMZA-2348
>                 URL: https://issues.apache.org/jira/browse/SAMZA-2348
>             Project: Samza
>          Issue Type: Bug
>            Reporter: Rayman
>            Priority: Major
>             Fix For: 1.3
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The problem is that a container's startup blocks indefinitely during Changelog / Checkpoint / Coordinator stream read, 
> whenever the KafkaConsumerProxy fails for some reason (e.g., TopicAuth).
> This is because the SSPIterator keeps blocking on the blocking poll even when KafkaConsumerProxy stops due to exceptions thrown from KafkaConsumer. 
> The fix is to allow KafkaConsumerProxy to report exceptions to KafkaSystemConsumer, which then relays it to BEM. 
> BEM checks if there are any exceptions when doing a poll and re-throws.



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