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https://issues.apache.org/jira/browse/IGNITE-18243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kirill Tkalenko updated IGNITE-18243:
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Fix Version/s: 3.0.0-beta2
> 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
> Fix For: 3.0.0-beta2
>
>
> 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.
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