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Posted to issues@ignite.apache.org by "Igor Sapego (JIRA)" <ji...@apache.org> on 2016/12/23 17:43:58 UTC

[jira] [Commented] (IGNITE-4488) ODBC: First query execution takes much more time than any subsequent

    [ https://issues.apache.org/jira/browse/IGNITE-4488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15773358#comment-15773358 ] 

Igor Sapego commented on IGNITE-4488:
-------------------------------------

It seems like this behavior related to query execution plan caching.

> ODBC: First query execution takes much more time than any subsequent
> --------------------------------------------------------------------
>
>                 Key: IGNITE-4488
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4488
>             Project: Ignite
>          Issue Type: Bug
>          Components: odbc, platforms
>    Affects Versions: 1.8
>            Reporter: Igor Sapego
>            Assignee: Igor Sapego
>             Fix For: 2.0
>
>
> When we perform SQL query on small dataset just to measure latency, the very first call takes much more time to execute than the same subsequent requests (~70ms vs ~10ms).
> The same behavior can be observed with C++ client.



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