[jira] [Assigned] (HIVE-19785) Race condition when timeout task is invoked during SASL negotation

["Aihua Xu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-19785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aihua Xu reassigned HIVE-19785:
-------------------------------

    Assignee: Aihua Xu

> 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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