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https://issues.apache.org/jira/browse/IMPALA-14460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Smith resolved IMPALA-14460.
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Fix Version/s: Impala 5.0.0
Resolution: Fixed
> Implement keep-alive on HS2-HTTP connections
> --------------------------------------------
>
> Key: IMPALA-14460
> URL: https://issues.apache.org/jira/browse/IMPALA-14460
> Project: IMPALA
> Issue Type: Improvement
> Components: Clients
> Reporter: Michael Smith
> Assignee: Michael Smith
> Priority: Critical
> Fix For: Impala 5.0.0
>
>
> impala-shell does not use HTTP keep-alive with HS2-HTTP connections, causing
> it to establish a new connection each time the client needs to send a
> request. In busy environments, this can exhaust previously working
> {{accepted_cnxn_setup_thread_pool_size}} settings.
> We should implement keep-alive for HS2-HTTP connections, which may require
> improvements in both impala-shell and the server implementation.
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