[jira] [Assigned] (IGNITE-8759) TcpDiscoverySpi: detailed info about current state in MBean

["Dmitry Karachentsev (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-8759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitry Karachentsev reassigned IGNITE-8759:
-------------------------------------------

    Assignee: Dmitry Karachentsev

> TcpDiscoverySpi: detailed info about current state in MBean
> -----------------------------------------------------------
>
>                 Key: IGNITE-8759
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8759
>             Project: Ignite
>          Issue Type: Improvement
>          Components: general
>            Reporter: Sergey Chugunov
>            Assignee: Dmitry Karachentsev
>            Priority: Major
>              Labels: discovery
>
> When TcpDiscoverySpi is used all nodes keep information about current topology locally. Discovery protocol is responsible of keeping this information consistent across all nodes.
> However in situations of network glitches some nodes may have different pictures of current state and topology of the cluster.
> To make it easier to monitor state of the whole cluster and identify such nodes quicker the following information should be presented via MBean interface on each node:
> * Current topology version;
> * Hash of current topology (e.g. sum of hash codes of all nodeIds) (to allow quick matching);
> * Pretty-formatted snapshot of current topology visible from the node;
> * Information about nodes visible/invisible to local one;
> * Other information useful to monitoring of topology state.



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