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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-6835) ODBC driver should handle ungraceful tcp disconnects
Date Wed, 08 Nov 2017 11:52:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-6835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16243780#comment-16243780

ASF GitHub Bot commented on IGNITE-6835:

GitHub user apopovgg opened a pull request:


    IGNITE-6835 ODBC driver should handle ungraceful tcp disconnects


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/gridgain/apache-ignite ignite-6835

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2997
commit dd595013ea42af8f5c60a3a8f5ea7a6c7b9c8e7e
Author: apopov <tank2.alex@gmail.com>
Date:   2017-11-08T11:42:59Z

    IGNITE-6835 ODBC driver should handle ungraceful tcp disconnects


> ODBC driver should handle ungraceful tcp disconnects
> ----------------------------------------------------
>                 Key: IGNITE-6835
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6835
>             Project: Ignite
>          Issue Type: Bug
>      Security Level: Public(Viewable by anyone) 
>          Components: odbc
>    Affects Versions: 2.1
>            Reporter: Alexey Popov
>            Assignee: Alexey Popov
> It is found that ungraceful TCP disconnect makes ODBC driver stuck at socket recv().
> Ungraceful TCP disconnect could be caused:
> 1. Network failure (or new firewall rules)
> 2. Remote party shutdown (Half Closed Connection)
> So, the proposal is:
> setup socket  options: 
> 1) SO_KEEPALIVE enabled
> 2) TCP_KEEPIDLE to 60 sec. It is 2 hour by default
> 3) TCP_KEEPINTVL to 5 (\?) sec. It is 1 sec at Win and 75 sec at Linux by default.
> 4) send/receive buffers to some greater value (8k by default)

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