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https://issues.apache.org/jira/browse/KAFKA-14604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dyingjiecai reopened KAFKA-14604:
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> SASL session expiration time will be overflowed when calculation
> ----------------------------------------------------------------
>
> Key: KAFKA-14604
> URL: https://issues.apache.org/jira/browse/KAFKA-14604
> Project: Kafka
> Issue Type: Bug
> Reporter: Luke Chen
> Assignee: PoAn Yang
> Priority: Major
>
> When sasl server of client set a large expiration time, the timeout value
> might be overflowed, and cause the session timeout immediately.
>
> [Here|https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/security/authenticator/SaslServerAuthenticator.java#L694]'s
> the sasl server timeout's calculation
> [Here|https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/security/authenticator/SaslClientAuthenticator.java#L692]'s
> the sasl client timeout's calculation
>
> something like this:
> {code:java}
> sessionExpirationTimeNanos = authenticationEndNanos + 1000 * 1000 *
> sessionLifetimeMs; {code}
> So, if the configured or returned sessionLifetimeMs is a large number, after
> the calculation, the `sessionExpirationTimeNanos` will be a negative value,
> and cause the session timeout on each check.
>
>
>
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