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Posted to dev@drill.apache.org by "Paul Rogers (JIRA)" <ji...@apache.org> on 2016/12/10 23:17:58 UTC
[jira] [Created] (DRILL-5123) Write query profile after sending
final response to client to improve latency
Paul Rogers created DRILL-5123:
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Summary: 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
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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