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From "Ivan Rakov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-11617) New exchange coordinator skips client fast reply for previous exchange
Date Sun, 24 Mar 2019 21:08:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-11617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16800174#comment-16800174

Ivan Rakov commented on IGNITE-11617:

TC looks good: https://ci.ignite.apache.org/viewLog.html?buildId=3402534&tab=buildResultsDiv&buildTypeId=IgniteTests24Java8_RunAll
Can't get TC bot visa, the fetaure is not working at the moment.
[~agoncharuk], please review.

> New exchange coordinator skips client fast reply for previous exchange
> ----------------------------------------------------------------------
>                 Key: IGNITE-11617
>                 URL: https://issues.apache.org/jira/browse/IGNITE-11617
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Alexey Goncharuk
>            Assignee: Ivan Rakov
>            Priority: Critical
>             Fix For: 2.8
>         Attachments: ClientFastReplyCoordinatorFailureTest.java
>          Time Spent: 10m
>  Remaining Estimate: 0h
> The following scenario is broken:
> 1) A client joins topology, all server nodes complete client exchange, client delays
sending it's single message
> 2) A new node joins topology, next exchange is started
> 3) Coordinator of the new exchange fails
> 4) New coordinator attempts to restore exchange state from all nodes, including client
from step 1
> 5) Client send single message. The message should be processed by a fast-reply path because
the corresponding exchange is completed. However, this does not happen because this exchange
was completed with state {{SRV}} on new coordinator. Fast-reply is omitted and exchange hangs.
> Attached is a test reproducing the problem.

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