[jira] [Updated] (IGNITE-16462) Thin client: add keep-alive message to detect half-open connections

["Pavel Tupitsyn (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-16462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pavel Tupitsyn updated IGNITE-16462:
------------------------------------
    Description: 
TCP connections can enter [half-open state|https://en.wikipedia.org/wiki/TCP_half-open]: seems to be alive, but any attempt to send data will fail. Long-living and mostly idle connections are especially susceptible to this behavior.

Retry mechanism ([IEP-82 Thin Client Retry Policy|https://cwiki.apache.org/confluence/display/IGNITE/IEP-82+Thin+Client+Retry+Policy]) in thin client implementations partially mitigates the issue. However, not all operations are safe to retry, and reconnect affects performance.

> Thin client: add keep-alive message to detect half-open connections
> -------------------------------------------------------------------
>
>                 Key: IGNITE-16462
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16462
>             Project: Ignite
>          Issue Type: Improvement
>          Components: platforms, thin client
>            Reporter: Pavel Tupitsyn
>            Assignee: Pavel Tupitsyn
>            Priority: Major
>             Fix For: 2.13
>
>
> TCP connections can enter [half-open state|https://en.wikipedia.org/wiki/TCP_half-open]: seems to be alive, but any attempt to send data will fail. Long-living and mostly idle connections are especially susceptible to this behavior.
> Retry mechanism ([IEP-82 Thin Client Retry Policy|https://cwiki.apache.org/confluence/display/IGNITE/IEP-82+Thin+Client+Retry+Policy]) in thin client implementations partially mitigates the issue. However, not all operations are safe to retry, and reconnect affects performance.



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