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https://issues.apache.org/jira/browse/IMPALA-14031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell resolved IMPALA-14031.
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Fix Version/s: Impala 5.0.0
Resolution: Fixed
> Enable keepalive for client connections by default
> --------------------------------------------------
>
> Key: IMPALA-14031
> URL: https://issues.apache.org/jira/browse/IMPALA-14031
> Project: IMPALA
> Issue Type: Task
> Components: Backend
> Affects Versions: Impala 5.0.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
> Fix For: Impala 5.0.0
>
>
> IMPALA-13253 added support for enabling keepalive for client connections by
> setting some startup flags, but it kept keepalive off by default. We should
> switch to enabling keepalive for client connections by default. This is
> particularly important for setups that use load balancers with idle timeouts,
> as that can cause client connections to pile up and hit the
> fe_service_threads limit.
> We'll need to decide on the default settings. The OS default is to start
> keepalive after 2 hours. I think the Impala defaults should be much more
> aggressive (e.g. client_keepalive_probe_period_s could be 10 minutes).
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