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https://issues.apache.org/jira/browse/IGNITE-10703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Kiriy updated IGNITE-10703:
----------------------------------
    Description: 
Currently drainTo(Collection<T> to, int amount) implemented as cyclic call of 
poll() method, which is ineffective.

Need to be implemented as truly batch operation - trying to read required 
amount of data at once.

current design prevent high-performance data transfer cross queue.

P.S. addAll implemented as batch, so together with right drainTo 
implementation, it will be complete high-performance batched read&write queue 
solution

  was:
Currently drainTo(Collection<T> to, int amount) implemented as cyclic call of 
poll() method, which is ineffective.

Need to be implemented as truly batch operation - trying to read required 
amount of data at once.

current design prevent high-performance data transfer cross queue.

P.S. addAll implemented as batch, so together with right drainTo 
implementation, it will be complete high-performance batched read&write solution


> Queue drainTo should be batched operation
> -----------------------------------------
>
>                 Key: IGNITE-10703
>                 URL: https://issues.apache.org/jira/browse/IGNITE-10703
>             Project: Ignite
>          Issue Type: Improvement
>          Components: data structures
>    Affects Versions: 2.7
>            Reporter: Dmitry Kiriy
>            Priority: Major
>              Labels: performance
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Currently drainTo(Collection<T> to, int amount) implemented as cyclic call of 
> poll() method, which is ineffective.
> Need to be implemented as truly batch operation - trying to read required 
> amount of data at once.
> current design prevent high-performance data transfer cross queue.
> P.S. addAll implemented as batch, so together with right drainTo 
> implementation, it will be complete high-performance batched read&write queue 
> solution



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