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https://issues.apache.org/jira/browse/HIVE-19785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aihua Xu updated HIVE-19785:
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Status: In Progress (was: Patch Available)
> Race condition when timeout task is invoked during SASL negotation
> ------------------------------------------------------------------
>
> Key: HIVE-19785
> URL: https://issues.apache.org/jira/browse/HIVE-19785
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Sahil Takiar
> Assignee: Aihua Xu
> Priority: Major
>
> There is a race condition that leads to some extraneous exception messages
> when the timeout task is invoked in {{RpcServer}}.
> If a timeout is triggered by {{RpcServer#registerClient}} the method will
> remove the {{clientId}} from {{pendingClients}}. However, if the SASL
> negotiation is in progress when the timeout task is invoked, then
> {{SaslServerHandler#update}} will throw an {{IllegalArgumentException}}
> complaining that it can't find the {{clientId}} in the map of
> {{pendingClients}}.
> The timeout still succeeds, but the logging is confusing and multiple
> exceptions make this difficult to debug.
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