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https://issues.apache.org/jira/browse/IMPALA-8701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Ho updated IMPALA-8701:
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Affects Version/s: Impala 3.3.0
> Document idle session management after IMPALA-7802
> --------------------------------------------------
>
> Key: IMPALA-8701
> URL: https://issues.apache.org/jira/browse/IMPALA-8701
> Project: IMPALA
> Issue Type: Documentation
> Components: Docs
> Affects Versions: Impala 3.3.0
> Reporter: Michael Ho
> Assignee: Alex Rodoni
> Priority: Major
>
> After IMPALA-7802 is fixed, the network connection of an idle session will be
> closed {{\-\-idle_client_poll_time_s}} seconds latest after the session has
> been declared idle. This is a change of behavior from previous versions in
> which the client connection will hang around until the user explicitly closes
> the session and disconnects.
> By default, {{\-\-idle_client_poll_time_s}} is set to 30 seconds and the
> previous behavior can be restored by setting to 0. In addition, the session
> will only be closed if idle session timeout has been configured to be greater
> than 0 for the session either via the startup flag {{--idle_session_timeout}}
> or the query option {{IDLE_SESSION_TIMEOUT}}. If idle session timeout is not
> configured, a session cannot become idle by definition and therefore its
> connection cannot be closed until the client explicitly closes it.
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