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https://issues.apache.org/jira/browse/IGNITE-12438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17079232#comment-17079232
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Ignite TC Bot commented on IGNITE-12438:
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{panel:title=Branch: [pull/7639/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
[TeamCity *--> Run :: All*
Results|https://ci.ignite.apache.org/viewLog.html?buildId=5201750&buildTypeId=IgniteTests24Java8_RunAll]
> Extend communication protocol to establish client-server connection
> -------------------------------------------------------------------
>
> Key: IGNITE-12438
> URL: https://issues.apache.org/jira/browse/IGNITE-12438
> Project: Ignite
> Issue Type: Improvement
> Reporter: Alexey Goncharuk
> Assignee: Ivan Bessonov
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Recently there was quite a lot of questions related to thick clients
> connectivity issues when the clients are deployed in a k8s pod [1]. The
> general issue here is clients reporting network address which are not
> reachable from server nodes. At the same time, the clients can connect to
> server nodes.
> An idea of how to fix this is as follows:
> * Make sure that think clients discovery SPI always maintains a connection
> to a server node (this should be already implemented)
> * (Optionally) detect when a client has only one-way connectivity with the
> server nodes. This part should be investigated. We need this to avoid server
> nodes attempt to connect to a client and send communication request to the
> client node faster
> * When a server attempts to establish a connection with a client, check if
> client is unreachable or the previous connection attempt failed. If so, send
> a discovery message to the client to force a client-server connection. In
> this case, server will be able to send the original message via the newly
> established connection.
> [1]
> https://stackoverflow.com/questions/59192075/ignite-communicationspi-questions-in-paas-environment/59232504
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