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https://issues.apache.org/jira/browse/IGNITE-4249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15683991#comment-15683991
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Igor Sapego commented on IGNITE-4249:
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I investigated the issue further and I found some other interesting detail:
ODBC driver were sending request in 2 steps - first it was sending header and
then message body itself. By some reason, there is a delay between first and
second packets on the receiving side (Java) for about 40ms. I've changed ODBC
logic to send request with a single call and now SQLExecute takes ~4ms. Weird.
> ODBC: Even simple request takes a lot of time.
> ----------------------------------------------
>
> Key: IGNITE-4249
> URL: https://issues.apache.org/jira/browse/IGNITE-4249
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Igor Sapego
> Assignee: Igor Sapego
> Labels: odbc
> Fix For: 1.8
>
>
> Even if you submit very simple request with {{SQLExecute}} on a small data
> set, it's going to take ~40ms to be processed, while the same request in C++
> client takes ~200us.
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