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https://issues.apache.org/jira/browse/IGNITE-21280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17815729#comment-17815729
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Vyacheslav Koptilin commented on IGNITE-21280:
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Hello [~nizhikov] ,

 

First of all, I am sorry for the late reply.

 

The introduced WAL record can be used for implementing partial updates on an 
entry like updating time-to-live value 
https://issues.apache.org/jira/browse/IGNITE-14326
In this case, we don't need to update the whole entry, it requires to re-write 
only 8 bytes in the same place (I mean 1 or 2 data pages that contain the 
value).
For now, such in-place updates are prohibited.

> Add DATA_PAGE_FRAGMENTED_UPDATE_RECORD WAL record type placeholder
> ------------------------------------------------------------------
>
>                 Key: IGNITE-21280
>                 URL: https://issues.apache.org/jira/browse/IGNITE-21280
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Vyacheslav Koptilin
>            Assignee: Vyacheslav Koptilin
>            Priority: Major
>             Fix For: 2.17
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Reserve new WAL type for encrypted DATA_PAGE_FRAGMENTED_UPDATE_RECORD record.



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