[jira] [Assigned] (IGNITE-18243) Implement a peek method for the sorted index cursor

["Kirill Tkalenko (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-18243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirill Tkalenko reassigned IGNITE-18243:
----------------------------------------

    Assignee: Kirill Tkalenko

> Implement a peek method for the sorted index cursor 
> ----------------------------------------------------
>
>                 Key: IGNITE-18243
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18243
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Vladislav Pyatkov
>            Assignee: Kirill Tkalenko
>            Priority: Major
>              Labels: ignite-3
>
> The transaction protocol have no possibility to create a range lock. Instead of the range locks, we are using two locks on two consecutive keys. There is a problem: how to determine a next key when we have a current one.
> For looking for the next key, we are planing to use a loop:
> {code:java}
> do {
>   nextKey = cursor.peek();
>   lock(nextKey);
> } while (nextKey != cursor.peek());
> {code}
> Hence, cursor.peek() should return a next element from the cursor (by sorted index) without movement from current position.



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