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From "Zelaine Fong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-5123) Write query profile after sending final response to client to improve latency
Date Wed, 14 Dec 2016 00:42:59 GMT

     [ https://issues.apache.org/jira/browse/DRILL-5123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zelaine Fong updated DRILL-5123:
--------------------------------
    Labels: ready-to-commit  (was: )

> Write query profile after sending final response to client to improve latency
> -----------------------------------------------------------------------------
>
>                 Key: DRILL-5123
>                 URL: https://issues.apache.org/jira/browse/DRILL-5123
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.8.0
>            Reporter: Paul Rogers
>            Assignee: Paul Rogers
>            Priority: Minor
>              Labels: ready-to-commit
>
> In testing a particular query, I used a test setup that does not write to the "persistent
store", causing query profiles to not be saved. I then changed the config to save them (to
local disk). This produced about a 200ms difference in query run time as perceived by the
client.
> I then moved writing the query profile _after_ sending the client the final message.
This resulted in an approximately 100ms savings, as perceived by the client, in query run
time on short (~3 sec.) queries.



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