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Posted to issues@flink.apache.org by "Till Rohrmann (Jira)" <ji...@apache.org> on 2019/09/23 12:45:00 UTC
[jira] [Updated] (FLINK-14076) 'ClassNotFoundException:
KafkaException' on Flink v1.9 w/ checkpointing
[ https://issues.apache.org/jira/browse/FLINK-14076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Till Rohrmann updated FLINK-14076:
----------------------------------
Component/s: Runtime / Checkpointing
> 'ClassNotFoundException: KafkaException' on Flink v1.9 w/ checkpointing
> -----------------------------------------------------------------------
>
> Key: FLINK-14076
> URL: https://issues.apache.org/jira/browse/FLINK-14076
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka, Runtime / Checkpointing
> Affects Versions: 1.9.0
> Reporter: Jeffrey Martin
> Priority: Major
> Attachments: error.txt
>
>
> A Flink job that worked with checkpointing on a Flink v1.8.0 cluster fails on a Flink v1.9.0 cluster with checkpointing. It works on a Flink v1.9.0 cluster _without_ checkpointing. It is specifically _enabling checkpointing on v1.9.0_ that causes the JM to start throwing ClassNotFoundExceptions. Full stacktrace: [^error.txt]
> The job reads from Kafka via FlinkKafkaConsumer and writes to Kafka via FlinkKafkaProducer.
> The jobmanagers and taskmanagers are standalone.
> The exception is being raised deep in some Flink serialization code, so I'm not sure how to go about stepping through this in a debugger. The issue is happening in an internal repository at my job, but I can try to get a minimal repro on GitHub if it's not obvious from the error message alone what's broken.
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