[jira] [Updated] (IGNITE-22286) Remove waitTimeout in deadlock retry policy

["Alexey Scherbakov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-22286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Scherbakov updated IGNITE-22286:
---------------------------------------
    Labels: ignite-3  (was: )

> Remove waitTimeout in deadlock retry policy
> -------------------------------------------
>
>                 Key: IGNITE-22286
>                 URL: https://issues.apache.org/jira/browse/IGNITE-22286
>             Project: Ignite
>          Issue Type: Improvement
>    Affects Versions: 3.0.0-beta1
>            Reporter: Alexey Scherbakov
>            Priority: Major
>              Labels: ignite-3
>             Fix For: 3.0
>
>
> After IGNITE-21540 and IGNITE-20127 we now have proper retries on client side.
> This means we no longer need org.apache.ignite.internal.tx.DeadlockPreventionPolicy#waitTimeout as a part of deadock prevention policy.
> Client side retries has benefit in the following scenario (having in mind WAIT_DIE prevention):
>  # tx1 takes lock at timestamp 10
>  # tx2 tries to take lock at timestamp 20 and goes for retry (without holding lock)
>  # tx1 lock is released
>  # tx3 takes lock at timestamp 30
>  # tx3 lock is released
>  # tx2 attemps to lock after retry and succeeds
> Without retry on step 2 tx3 would retry too on step 4.



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