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https://issues.apache.org/jira/browse/IGNITE-16188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17466109#comment-17466109
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Nikolay Izhikov commented on IGNITE-16188:
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> could you please explain the reason why singleton lists here are so bad?

It's not "so bad" it's just useless.

> You could rather replace the type of "writeEntries" from "List" to "Object" 
> and store either data entry or the full list depending on the amount of 
> entries.

Yes, this approach looks simplier.

> Eliminate creation of singleton list for DataRecord
> ---------------------------------------------------
>
>                 Key: IGNITE-16188
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16188
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Nikolay Izhikov
>            Assignee: Nikolay Izhikov
>            Priority: Major
>
> For most DataRecord intermidiate {{Collections.singletonList}} created.
> It possible to eliminate this object with {{SingleDataRecord}}, 
> {{MultiDataRecord}}.



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