[jira] [Updated] (IGNITE-18192) Conditional lock

["Vladislav Pyatkov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-18192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladislav Pyatkov updated IGNITE-18192:
---------------------------------------
    Epic Link: IGNITE-18042

> Conditional lock
> ----------------
>
>                 Key: IGNITE-18192
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18192
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Vladislav Pyatkov
>            Priority: Major
>              Labels: ignite-3
>
> *Motivation:*
> In some case we need to change lock mode depends on current lock which is held in the key. This is impossible through Lock Manager API, because a lock mode can change concurrently in the same key on the same transaction.
> Required a new method in API which allow choosing lock mode depends on previous. This choosing should be acted in a critical section, where another thread cannot change the mode until a new one is chosen.
> *Implementation notes:*
> Add a method to _LockManager_:
> CompletableFuture<Lock> acquire(UUID txId, LockKey lockKey, Function<LockMode, LockMode>);



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