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https://issues.apache.org/jira/browse/KAFKA-4493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15725713#comment-15725713
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Gérald Quintana commented on KAFKA-4493:
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See also KAFKA-4491
> Connections to Kafka brokers should be validated
> ------------------------------------------------
>
> Key: KAFKA-4493
> URL: https://issues.apache.org/jira/browse/KAFKA-4493
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ismael Juma
>
> There have been a few reports of Kafka clients throwing an OOM because they
> read 4 bytes from the stream and then use that to allocate a ByteBuffer
> without validating that they are using the right security protocol or even
> communicating with a Kafka broker.
> It would be good to perform some validation in order to show a useful error
> message to the user instead of the OOM.
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