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Posted to issues@kylin.apache.org by "Gladson Vas (JIRA)" <ji...@apache.org> on 2019/07/12 06:32:00 UTC

[jira] [Updated] (KYLIN-4079) Concurrent query requests using Query API makes the query execution take too much time

     [ https://issues.apache.org/jira/browse/KYLIN-4079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gladson Vas updated KYLIN-4079:
-------------------------------
    Attachment: SlowQueryExecution1.jpg

> Concurrent query requests using Query API makes the query execution take too much time
> --------------------------------------------------------------------------------------
>
>                 Key: KYLIN-4079
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4079
>             Project: Kylin
>          Issue Type: Bug
>          Components: Query Engine
>            Reporter: Gladson Vas
>            Priority: Major
>         Attachments: NormalQueryExecution.jpg, SlowQueryExecution.jpg, SlowQueryExecution1.jpg
>
>
> Hi,
>                 When 40 queries are executed on kylin parallelly (at once)  the response time distribution is as below, with min, max and mean response time as 6557,7580 and 6887 ms respectively.
>                 Kylin doesn’t seem to handle parallel execution of queries.
> !SlowQueryExecution.png!
> !SlowQueryExecution1.png!
>                 But when 40 queries are executed over 40 seconds i.e one query executed per second the response time distribution is as below, with min, max and mean response time as 110,2820 and 248 ms respectively.
>                 This seems fine as  the mean response time  in less than a second.
> !NormalQueryExecution.png!!NormalQueryExecution1.png!
>  
>                 There seems to be some problem when queries are fired in parallel to kylin.Please help.
>  



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