[jira] [Updated] (IGNITE-3484) MVCC data structure for getAll operation

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

     [ https://issues.apache.org/jira/browse/IGNITE-3484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Ozerov updated IGNITE-3484:
------------------------------------
    Issue Type: Task  (was: Sub-task)
        Parent:     (was: IGNITE-3478)

> MVCC data structure for getAll operation
> ----------------------------------------
>
>                 Key: IGNITE-3484
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3484
>             Project: Ignite
>          Issue Type: Task
>          Components: cache
>            Reporter: Alexey Goncharuk
>            Assignee: Semen Boikov
>
> Need implement some data structure to store/get multiple entry versions:
> - committed value at first is stored in separate data structure (there also need store related tx id to filter out data for non-finished transactions), probably existing BPlusTree can be used
> - periodically need flush data for finished transaction in 'main' hash index
> - 'getAll' operation should include max 'visible' ID and list of active transactions, this information should be used to find last 'visible' version in 'mvcc' or 'main' index



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