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From "Alexey Goncharuk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-11621) Node is stuck in "No next node in topology" infinite loop in special case.
Date Mon, 08 Apr 2019 16:09:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-11621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16812544#comment-16812544
] 

Alexey Goncharuk commented on IGNITE-11621:
-------------------------------------------

[~sergey-chugunov], can you add a short comment to the changed line to explain why this condition
is important? Otherwise looks good.

> Node is stuck in "No next node in topology" infinite loop in special case.
> --------------------------------------------------------------------------
>
>                 Key: IGNITE-11621
>                 URL: https://issues.apache.org/jira/browse/IGNITE-11621
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Sergey Chugunov
>            Assignee: Sergey Chugunov
>            Priority: Critical
>             Fix For: 2.8
>
>         Attachments: NoNextNodeInTopologyReproducer.java
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In special case (reproducer is attached) node may stuck in the loop when the following
sequence of events happens:
> * Nodes A and B are already in cluster.
> * Node C starts joining the cluster.
> * On node C NodeAdded message new node D is started.
> * Before NodeAddFinished for node C reaches it socket to node C fails and node is considered
failed by the cluster.
> * When NodeFailed message for node C reaches node B both A and B fails.
> * After that node D gets stuck in infinite "No next node in topology" loop processing
NodeFailed messages for A, B and C indefinitely.
> The main logic in attached reproducer lives in node1SpecialSpi - it is a TcpDiscoverySpi
node B starts with.



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