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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-8356) Possible race at the discovery on the start node
Date Thu, 27 Sep 2018 09:14:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-8356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16630010#comment-16630010

Vladimir Ozerov commented on IGNITE-8356:

Moved to 2.8 due to inactivity. Please feel free to move back if you will be able to complete
the ticket by AI 2.7 code freeze date, September 30, 2018.

> Possible race at the discovery on the start node
> ------------------------------------------------
>                 Key: IGNITE-8356
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8356
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.4
>            Reporter: Taras Ledkov
>            Priority: Major
>             Fix For: 2.8
> The problem was discovered on the IGNITE-8355. 
> But *root cause* is the race on the start of the node discovery.
> The race happens because a joining node may start processing NodeAddMessage before processing
local node's NodeAddFinishedMessage. Because of this, the local node will not have any constructed
DiscoCache yet and NPE happens.
> We need to take a look at the workaround suggested in IGNITE-8355 and 
> 1) Check if any public API changes are needed on DiscoverySpi interface
> 2) Verify it works for ZookeeperDiscoverySpi.

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