[jira] [Assigned] (IGNITE-17880) Topology version must be extended with topology epoch

["Ilya Shishkov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-17880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ilya Shishkov reassigned IGNITE-17880:
--------------------------------------

    Assignee:     (was: Ilya Shishkov)

> Topology version must be extended with topology epoch
> -----------------------------------------------------
>
>                 Key: IGNITE-17880
>                 URL: https://issues.apache.org/jira/browse/IGNITE-17880
>             Project: Ignite
>          Issue Type: Sub-task
>            Reporter: Anton Vinogradov
>            Priority: Major
>              Labels: ise
>
> Epoch must be presented as a timestamp and version pair.
> Epoch timestamp must represent epoch start time.
> Epoch major version must be incremented each time when topology version changed from 0 to 1 (when the cluster started or restarted).
> Epoch minor version should be changed on every baseline change.
> Node's epoch version must be increased or keeped as is on node join.
> Each decreasing must be logged as an error.
> Epoch (version and timestamp) must be logged at every topology version change.
> This will 
> - help to determine how many times the cluster was restarted (and make it easier to determine when)
> - checks that the part of the cluster which was restarted several times as a standalone/segmented cluster will never join the rest of the cluster with the lower epoch (check some segmentation and management problems)



--
This message was sent by Atlassian Jira
(v8.20.10#820010)