[jira] [Closed] (IGNITE-4638) Share current DDL schema and pending DDL operations with joining nodes

["Vladimir Ozerov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-4638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Ozerov closed IGNITE-4638.
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> Share current DDL schema and pending DDL operations with joining nodes
> ----------------------------------------------------------------------
>
>                 Key: IGNITE-4638
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4638
>             Project: Ignite
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Vladimir Ozerov
>            Assignee: Vladimir Ozerov
>             Fix For: 2.0
>
>
> 1) Basically there are three operation types which must be shared with joining node:
> - {{COMPLETED}} - shared as snapshot of current schema state;
> - {{ACKED}} - shared as operation requests;
> - {{INITED}} - shared as operation requests.
> 2) Completed and acked operations are applied right away.
> 3) Inited operations are not applied immediately. Instead, joined node sends {{VERIFY_INIT_OPS}} request to coordinator. Operations are applied only after coordinator confirmed that they were not rejected on {{INIT}} stage.
> It seems that to achieve p.3 nodes will have to keep a kind of history of rejected operations which is not very desirable, but do we really have other options?



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